• https://repository.upb.edu.co/handle/20.500.11912/3888
• https://repository.upb.edu.co/handle/20.500.11912/650
• https://repository.upb.edu.co/handle/20.500.11912/683
• https://repository.upb.edu.co/handle/20.500.11912/1030
• https://repository.upb.edu.co/handle/20.500.11912/11391
• https://repository.upb.edu.co/handle/20.500.11912/9524
• https://repository.upb.edu.co/handle/20.500.11912/6188
• https://repository.upb.edu.co/handle/20.500.11912/3630
• https://repository.upb.edu.co/handle/20.500.11912/11470
• https://repository.upb.edu.co/handle/20.500.11912/4169
• https://repository.upb.edu.co/handle/20.500.11912/2330
• https://repository.upb.edu.co/handle/20.500.11912/4492
• https://repository.upb.edu.co/handle/20.500.11912/9980
• https://repository.upb.edu.co/handle/20.500.11912/4388
• https://repository.upb.edu.co/handle/20.500.11912/1286
• https://repository.upb.edu.co/handle/20.500.11912/702
• https://repository.upb.edu.co/handle/20.500.11912/6042
• https://repository.upb.edu.co/handle/20.500.11912/6574
• https://repository.upb.edu.co/handle/20.500.11912/2044
• https://repository.upb.edu.co/handle/20.500.11912/11247
• https://repository.upb.edu.co/handle/20.500.11912/4105
• https://repository.upb.edu.co/handle/20.500.11912/11479
• https://repository.upb.edu.co/handle/20.500.11912/729
• https://repository.upb.edu.co/handle/20.500.11912/11155
• https://repository.upb.edu.co/handle/20.500.11912/1262
• https://repository.upb.edu.co/handle/20.500.11912/11399
• https://repository.upb.edu.co/handle/20.500.11912/5592
• https://repository.upb.edu.co/handle/20.500.11912/6127
• https://repository.upb.edu.co/handle/20.500.11912/12099
• https://repository.upb.edu.co/handle/20.500.11912/7712
• https://repository.upb.edu.co/handle/20.500.11912/8122
• https://repository.upb.edu.co/handle/20.500.11912/4943
• https://repository.upb.edu.co/handle/20.500.11912/2013
• https://repository.upb.edu.co/handle/20.500.11912/5667
• https://repository.upb.edu.co/handle/20.500.11912/10525
• https://repository.upb.edu.co/handle/20.500.11912/6105
• https://repository.upb.edu.co/handle/20.500.11912/4642
• https://repository.upb.edu.co/handle/20.500.11912/320
• https://repository.upb.edu.co/handle/20.500.11912/12170
• https://repository.upb.edu.co/handle/20.500.11912/7830
• https://repository.upb.edu.co/handle/20.500.11912/1743
• https://repository.upb.edu.co/handle/20.500.11912/3844
• https://repository.upb.edu.co/handle/20.500.11912/10314
• https://repository.upb.edu.co/handle/20.500.11912/2706
• https://repository.upb.edu.co/handle/20.500.11912/7424
• https://repository.upb.edu.co/handle/20.500.11912/3376
• https://repository.upb.edu.co/handle/20.500.11912/11554
• https://repository.upb.edu.co/handle/20.500.11912/8984
• https://repository.upb.edu.co/handle/20.500.11912/6214
• https://repository.upb.edu.co/handle/20.500.11912/1187
• https://repository.upb.edu.co/handle/20.500.11912/8167
• https://repository.upb.edu.co/handle/20.500.11912/7551
• https://repository.upb.edu.co/handle/20.500.11912/9407
• https://repository.upb.edu.co/handle/20.500.11912/6552
• https://repository.upb.edu.co/handle/20.500.11912/12577
• https://repository.upb.edu.co/handle/20.500.11912/5135
• https://repository.upb.edu.co/handle/20.500.11912/6120
• https://repository.upb.edu.co/handle/20.500.11912/4028
• https://repository.upb.edu.co/handle/20.500.11912/7087
• https://repository.upb.edu.co/handle/20.500.11912/1953
• https://repository.upb.edu.co/handle/20.500.11912/193
• https://repository.upb.edu.co/handle/20.500.11912/3134
• https://repository.upb.edu.co/handle/20.500.11912/7929
• https://repository.upb.edu.co/handle/20.500.11912/1195
• https://repository.upb.edu.co/handle/20.500.11912/11425
• https://repository.upb.edu.co/handle/20.500.11912/9070
• https://repository.upb.edu.co/handle/20.500.11912/11683
• https://repository.upb.edu.co/handle/20.500.11912/11606
• https://repository.upb.edu.co/handle/20.500.11912/3456
• https://repository.upb.edu.co/handle/20.500.11912/5641
• https://repository.upb.edu.co/handle/20.500.11912/9153
• https://repository.upb.edu.co/handle/20.500.11912/9629
• https://repository.upb.edu.co/handle/20.500.11912/2224
• https://repository.upb.edu.co/handle/20.500.11912/3795
• https://repository.upb.edu.co/handle/20.500.11912/8052
• https://repository.upb.edu.co/handle/20.500.11912/2491
• https://repository.upb.edu.co/handle/20.500.11912/5347
• https://repository.upb.edu.co/handle/20.500.11912/8206
• https://repository.upb.edu.co/handle/20.500.11912/5519
• https://repository.upb.edu.co/handle/20.500.11912/6106
• https://repository.upb.edu.co/handle/20.500.11912/6465
• https://repository.upb.edu.co/handle/20.500.11912/79
• https://repository.upb.edu.co/handle/20.500.11912/9475
• https://repository.upb.edu.co/handle/20.500.11912/8869
• https://repository.upb.edu.co/handle/20.500.11912/4406
• https://repository.upb.edu.co/handle/20.500.11912/281
• https://repository.upb.edu.co/handle/20.500.11912/11792
• https://repository.upb.edu.co/handle/20.500.11912/3080
• https://repository.upb.edu.co/handle/20.500.11912/5199
• https://repository.upb.edu.co/handle/20.500.11912/4588
• https://repository.upb.edu.co/handle/20.500.11912/8681
• https://repository.upb.edu.co/handle/20.500.11912/3662
• https://repository.upb.edu.co/handle/20.500.11912/5315
• https://repository.upb.edu.co/handle/20.500.11912/2549
• https://repository.upb.edu.co/handle/20.500.11912/1578
• https://repository.upb.edu.co/handle/20.500.11912/1553
• https://repository.upb.edu.co/handle/20.500.11912/227
• https://repository.upb.edu.co/handle/20.500.11912/4570
• https://repository.upb.edu.co/handle/20.500.11912/2768
• https://repository.upb.edu.co/handle/20.500.11912/8786
• https://repository.upb.edu.co/handle/20.500.11912/569
• https://repository.upb.edu.co/handle/20.500.11912/8938
• https://repository.upb.edu.co/handle/20.500.11912/4095
• https://repository.upb.edu.co/handle/20.500.11912/8897
• https://repository.upb.edu.co/handle/20.500.11912/10066
• https://repository.upb.edu.co/handle/20.500.11912/7048
• https://repository.upb.edu.co/handle/20.500.11912/1608
• https://repository.upb.edu.co/handle/20.500.11912/12628
• https://repository.upb.edu.co/handle/20.500.11912/3226
• https://repository.upb.edu.co/handle/20.500.11912/1369
• https://repository.upb.edu.co/handle/20.500.11912/3677
• https://repository.upb.edu.co/handle/20.500.11912/11352
• https://repository.upb.edu.co/handle/20.500.11912/615
• https://repository.upb.edu.co/handle/20.500.11912/4919
• https://repository.upb.edu.co/handle/20.500.11912/5713
• https://repository.upb.edu.co/handle/20.500.11912/5485
• https://repository.upb.edu.co/handle/20.500.11912/1013
• https://repository.upb.edu.co/handle/20.500.11912/8508
• https://repository.upb.edu.co/handle/20.500.11912/7023
• https://repository.upb.edu.co/handle/20.500.11912/10530
• https://repository.upb.edu.co/handle/20.500.11912/7381
• https://repository.upb.edu.co/handle/20.500.11912/2894
• https://repository.upb.edu.co/handle/20.500.11912/1097
• https://repository.upb.edu.co/handle/20.500.11912/9221
• https://repository.upb.edu.co/handle/20.500.11912/2268
• https://repository.upb.edu.co/handle/20.500.11912/1245
• https://repository.upb.edu.co/handle/20.500.11912/9103
• https://repository.upb.edu.co/handle/20.500.11912/2658
• https://repository.upb.edu.co/handle/20.500.11912/7234
• https://repository.upb.edu.co/handle/20.500.11912/5877
• https://repository.upb.edu.co/handle/20.500.11912/7250
• https://repository.upb.edu.co/handle/20.500.11912/4650
• https://repository.upb.edu.co/handle/20.500.11912/11836
• https://repository.upb.edu.co/handle/20.500.11912/1960
• https://repository.upb.edu.co/handle/20.500.11912/6597
• https://repository.upb.edu.co/handle/20.500.11912/5613
• https://repository.upb.edu.co/handle/20.500.11912/695
• https://repository.upb.edu.co/handle/20.500.11912/10654
• https://repository.upb.edu.co/handle/20.500.11912/5231
• https://repository.upb.edu.co/handle/20.500.11912/8337
• https://repository.upb.edu.co/handle/20.500.11912/7108
• https://repository.upb.edu.co/handle/20.500.11912/12342
• https://repository.upb.edu.co/handle/20.500.11912/6875
• https://repository.upb.edu.co/handle/20.500.11912/12573
• https://repository.upb.edu.co/handle/20.500.11912/2625
• https://repository.upb.edu.co/handle/20.500.11912/11889
• https://repository.upb.edu.co/handle/20.500.11912/5441
• https://repository.upb.edu.co/handle/20.500.11912/10351
• https://repository.upb.edu.co/handle/20.500.11912/2983
• https://repository.upb.edu.co/handle/20.500.11912/11536
• https://repository.upb.edu.co/handle/20.500.11912/35
• https://repository.upb.edu.co/handle/20.500.11912/1628
• https://repository.upb.edu.co/handle/20.500.11912/10773
• https://repository.upb.edu.co/handle/20.500.11912/11996
• https://repository.upb.edu.co/handle/20.500.11912/7970
• https://repository.upb.edu.co/handle/20.500.11912/4847
• https://repository.upb.edu.co/handle/20.500.11912/9919
• https://repository.upb.edu.co/handle/20.500.11912/4029
• https://repository.upb.edu.co/handle/20.500.11912/1947
• https://repository.upb.edu.co/handle/20.500.11912/7694
• https://repository.upb.edu.co/handle/20.500.11912/11624
• https://repository.upb.edu.co/handle/20.500.11912/528
• https://repository.upb.edu.co/handle/20.500.11912/2910
• https://repository.upb.edu.co/handle/20.500.11912/9804
• https://repository.upb.edu.co/handle/20.500.11912/418
• https://repository.upb.edu.co/handle/20.500.11912/5549
• https://repository.upb.edu.co/handle/20.500.11912/10061
• https://repository.upb.edu.co/handle/20.500.11912/2227
• https://repository.upb.edu.co/handle/20.500.11912/3993
• https://repository.upb.edu.co/handle/20.500.11912/1165
• https://repository.upb.edu.co/handle/20.500.11912/5993
• https://repository.upb.edu.co/handle/20.500.11912/4428
• https://repository.upb.edu.co/handle/20.500.11912/9904
• https://repository.upb.edu.co/handle/20.500.11912/1708
• https://repository.upb.edu.co/handle/20.500.11912/10442
• https://repository.upb.edu.co/handle/20.500.11912/4445
• https://repository.upb.edu.co/handle/20.500.11912/931
• https://repository.upb.edu.co/handle/20.500.11912/82
• https://repository.upb.edu.co/handle/20.500.11912/1835
• https://repository.upb.edu.co/handle/20.500.11912/9142
• https://repository.upb.edu.co/handle/20.500.11912/5605
• https://repository.upb.edu.co/handle/20.500.11912/5650
• https://repository.upb.edu.co/handle/20.500.11912/8991
• https://repository.upb.edu.co/handle/20.500.11912/2796
• https://repository.upb.edu.co/handle/20.500.11912/5055
• https://repository.upb.edu.co/handle/20.500.11912/3804
• https://repository.upb.edu.co/handle/20.500.11912/3965
• https://repository.upb.edu.co/handle/20.500.11912/11350
• https://repository.upb.edu.co/handle/20.500.11912/590
• https://repository.upb.edu.co/handle/20.500.11912/5757
• https://repository.upb.edu.co/handle/20.500.11912/9352
• https://repository.upb.edu.co/handle/20.500.11912/8370
• https://repository.upb.edu.co/handle/20.500.11912/4386
• https://repository.upb.edu.co/handle/20.500.11912/7103
• https://repository.upb.edu.co/handle/20.500.11912/4168
• https://repository.upb.edu.co/handle/20.500.11912/4416
• https://repository.upb.edu.co/handle/20.500.11912/5287
• https://repository.upb.edu.co/handle/20.500.11912/8294
• https://repository.upb.edu.co/handle/20.500.11912/2041
• https://repository.upb.edu.co/handle/20.500.11912/1848
• https://repository.upb.edu.co/handle/20.500.11912/9867
• https://repository.upb.edu.co/handle/20.500.11912/3947
• https://repository.upb.edu.co/handle/20.500.11912/8394
• https://repository.upb.edu.co/handle/20.500.11912/10031
• https://repository.upb.edu.co/handle/20.500.11912/7230
• https://repository.upb.edu.co/handle/20.500.11912/5982
• https://repository.upb.edu.co/handle/20.500.11912/8561
• https://repository.upb.edu.co/handle/20.500.11912/1727
• https://repository.upb.edu.co/handle/20.500.11912/2235
• https://repository.upb.edu.co/handle/20.500.11912/11256
• https://repository.upb.edu.co/handle/20.500.11912/421
• https://repository.upb.edu.co/handle/20.500.11912/9251
• https://repository.upb.edu.co/handle/20.500.11912/3756
• https://repository.upb.edu.co/handle/20.500.11912/11903
• https://repository.upb.edu.co/handle/20.500.11912/225
• https://repository.upb.edu.co/handle/20.500.11912/11251
• https://repository.upb.edu.co/handle/20.500.11912/8840
• https://repository.upb.edu.co/handle/20.500.11912/7755
• https://repository.upb.edu.co/handle/20.500.11912/647
• https://repository.upb.edu.co/handle/20.500.11912/9460
• https://repository.upb.edu.co/handle/20.500.11912/11544
• https://repository.upb.edu.co/handle/20.500.11912/7666
• https://repository.upb.edu.co/handle/20.500.11912/2085
• https://repository.upb.edu.co/handle/20.500.11912/8251
• https://repository.upb.edu.co/handle/20.500.11912/11154
• https://repository.upb.edu.co/handle/20.500.11912/7176
• https://repository.upb.edu.co/handle/20.500.11912/10239
• https://repository.upb.edu.co/handle/20.500.11912/7158
• https://repository.upb.edu.co/handle/20.500.11912/2091
• https://repository.upb.edu.co/handle/20.500.11912/7917
• https://repository.upb.edu.co/handle/20.500.11912/5147
• https://repository.upb.edu.co/handle/20.500.11912/1167
• https://repository.upb.edu.co/handle/20.500.11912/11794
• https://repository.upb.edu.co/handle/20.500.11912/8196
• https://repository.upb.edu.co/handle/20.500.11912/12389
• https://repository.upb.edu.co/handle/20.500.11912/4446
• https://repository.upb.edu.co/handle/20.500.11912/922
• https://repository.upb.edu.co/handle/20.500.11912/11043
• https://repository.upb.edu.co/handle/20.500.11912/4953
• https://repository.upb.edu.co/handle/20.500.11912/4192
• https://repository.upb.edu.co/handle/20.500.11912/8344
• https://repository.upb.edu.co/handle/20.500.11912/10853
• https://repository.upb.edu.co/handle/20.500.11912/9022
• https://repository.upb.edu.co/handle/20.500.11912/7323
• https://repository.upb.edu.co/handle/20.500.11912/2459
• https://repository.upb.edu.co/handle/20.500.11912/1823
• https://repository.upb.edu.co/handle/20.500.11912/500
• https://repository.upb.edu.co/handle/20.500.11912/2033
• https://repository.upb.edu.co/handle/20.500.11912/11329
• https://repository.upb.edu.co/handle/20.500.11912/1185
• https://repository.upb.edu.co/handle/20.500.11912/8260
• https://repository.upb.edu.co/handle/20.500.11912/8785
• https://repository.upb.edu.co/handle/20.500.11912/4109
• https://repository.upb.edu.co/handle/20.500.11912/4795
• https://repository.upb.edu.co/handle/20.500.11912/5148
• https://repository.upb.edu.co/handle/20.500.11912/607
• https://repository.upb.edu.co/handle/20.500.11912/8037
• https://repository.upb.edu.co/handle/20.500.11912/5056
• https://repository.upb.edu.co/handle/20.500.11912/9032
• https://repository.upb.edu.co/handle/20.500.11912/10879
• https://repository.upb.edu.co/handle/20.500.11912/9474
• https://repository.upb.edu.co/handle/20.500.11912/10274
• https://repository.upb.edu.co/handle/20.500.11912/8507
• https://repository.upb.edu.co/handle/20.500.11912/2778
• https://repository.upb.edu.co/handle/20.500.11912/4278
• https://repository.upb.edu.co/handle/20.500.11912/6297
• https://repository.upb.edu.co/handle/20.500.11912/340
• https://repository.upb.edu.co/handle/20.500.11912/12594
• https://repository.upb.edu.co/handle/20.500.11912/616
• https://repository.upb.edu.co/handle/20.500.11912/8564
• https://repository.upb.edu.co/handle/20.500.11912/3499
• https://repository.upb.edu.co/handle/20.500.11912/9457
• https://repository.upb.edu.co/handle/20.500.11912/537
• https://repository.upb.edu.co/handle/20.500.11912/10535
• https://repository.upb.edu.co/handle/20.500.11912/9572
• https://repository.upb.edu.co/handle/20.500.11912/11051
• https://repository.upb.edu.co/handle/20.500.11912/12566
• https://repository.upb.edu.co/handle/20.500.11912/4385
• https://repository.upb.edu.co/handle/20.500.11912/11916
• https://repository.upb.edu.co/handle/20.500.11912/3236
• https://repository.upb.edu.co/handle/20.500.11912/7814
• https://repository.upb.edu.co/handle/20.500.11912/7266
• https://repository.upb.edu.co/handle/20.500.11912/3370
• https://repository.upb.edu.co/handle/20.500.11912/7252
• https://repository.upb.edu.co/handle/20.500.11912/8111
• https://repository.upb.edu.co/handle/20.500.11912/8233
• https://repository.upb.edu.co/handle/20.500.11912/2010
• https://repository.upb.edu.co/handle/20.500.11912/10411
• https://repository.upb.edu.co/handle/20.500.11912/7315
• https://repository.upb.edu.co/handle/20.500.11912/5382
• https://repository.upb.edu.co/handle/20.500.11912/6289
• https://repository.upb.edu.co/handle/20.500.11912/7625
• https://repository.upb.edu.co/handle/20.500.11912/7363
• https://repository.upb.edu.co/handle/20.500.11912/2294
• https://repository.upb.edu.co/handle/20.500.11912/2951
• https://repository.upb.edu.co/handle/20.500.11912/10468
• https://repository.upb.edu.co/handle/20.500.11912/5608
• https://repository.upb.edu.co/handle/20.500.11912/1020
• https://repository.upb.edu.co/handle/20.500.11912/2973
• https://repository.upb.edu.co/handle/20.500.11912/1754
• https://repository.upb.edu.co/handle/20.500.11912/8737
• https://repository.upb.edu.co/handle/20.500.11912/9959
• https://repository.upb.edu.co/handle/20.500.11912/4073
• https://repository.upb.edu.co/handle/20.500.11912/2673
• https://repository.upb.edu.co/handle/20.500.11912/7916
• https://repository.upb.edu.co/handle/20.500.11912/1729
• https://repository.upb.edu.co/handle/20.500.11912/903
• https://repository.upb.edu.co/handle/20.500.11912/9168
• https://repository.upb.edu.co/handle/20.500.11912/2964
• https://repository.upb.edu.co/handle/20.500.11912/8995
• https://repository.upb.edu.co/handle/20.500.11912/1489
• https://repository.upb.edu.co/handle/20.500.11912/10217
• https://repository.upb.edu.co/handle/20.500.11912/210
• https://repository.upb.edu.co/handle/20.500.11912/8355
• https://repository.upb.edu.co/handle/20.500.11912/6413
• https://repository.upb.edu.co/handle/20.500.11912/2480
• https://repository.upb.edu.co/handle/20.500.11912/5846
• https://repository.upb.edu.co/handle/20.500.11912/1679
• https://repository.upb.edu.co/handle/20.500.11912/7760
• https://repository.upb.edu.co/handle/20.500.11912/1432
• https://repository.upb.edu.co/handle/20.500.11912/1552
• https://repository.upb.edu.co/handle/20.500.11912/7298
• https://repository.upb.edu.co/handle/20.500.11912/1099
• https://repository.upb.edu.co/handle/20.500.11912/12240
• https://repository.upb.edu.co/handle/20.500.11912/8212
• https://repository.upb.edu.co/handle/20.500.11912/7422
• https://repository.upb.edu.co/handle/20.500.11912/7643
• https://repository.upb.edu.co/handle/20.500.11912/1543
• https://repository.upb.edu.co/handle/20.500.11912/2222
• https://repository.upb.edu.co/handle/20.500.11912/2018
• https://repository.upb.edu.co/handle/20.500.11912/2605
• https://repository.upb.edu.co/handle/20.500.11912/6340
• https://repository.upb.edu.co/handle/20.500.11912/104
• https://repository.upb.edu.co/handle/20.500.11912/2047
• https://repository.upb.edu.co/handle/20.500.11912/9763
• https://repository.upb.edu.co/handle/20.500.11912/4942
• https://repository.upb.edu.co/handle/20.500.11912/4494
• https://repository.upb.edu.co/handle/20.500.11912/3665
• https://repository.upb.edu.co/handle/20.500.11912/9795
• https://repository.upb.edu.co/handle/20.500.11912/11977
• https://repository.upb.edu.co/handle/20.500.11912/3145
• https://repository.upb.edu.co/handle/20.500.11912/10669
• https://repository.upb.edu.co/handle/20.500.11912/7102
• https://repository.upb.edu.co/handle/20.500.11912/2185
• https://repository.upb.edu.co/handle/20.500.11912/10609
• https://repository.upb.edu.co/handle/20.500.11912/9271
• https://repository.upb.edu.co/handle/20.500.11912/2196
• https://repository.upb.edu.co/handle/20.500.11912/11298
• https://repository.upb.edu.co/handle/20.500.11912/5712
• https://repository.upb.edu.co/handle/20.500.11912/4915
• https://repository.upb.edu.co/handle/20.500.11912/10319
• https://repository.upb.edu.co/handle/20.500.11912/2814
• https://repository.upb.edu.co/handle/20.500.11912/2695
• https://repository.upb.edu.co/handle/20.500.11912/5959
• https://repository.upb.edu.co/handle/20.500.11912/1944
• https://repository.upb.edu.co/handle/20.500.11912/1308
• https://repository.upb.edu.co/handle/20.500.11912/6831
• https://repository.upb.edu.co/handle/20.500.11912/7728
• https://repository.upb.edu.co/handle/20.500.11912/1274
• https://repository.upb.edu.co/handle/20.500.11912/5567
• https://repository.upb.edu.co/handle/20.500.11912/4282
• https://repository.upb.edu.co/handle/20.500.11912/3392
• https://repository.upb.edu.co/handle/20.500.11912/10761
• https://repository.upb.edu.co/handle/20.500.11912/10190
• https://repository.upb.edu.co/handle/20.500.11912/556
• https://repository.upb.edu.co/handle/20.500.11912/11075
• https://repository.upb.edu.co/handle/20.500.11912/7510
• https://repository.upb.edu.co/handle/20.500.11912/1261
• https://repository.upb.edu.co/handle/20.500.11912/9915
• https://repository.upb.edu.co/handle/20.500.11912/10993
• https://repository.upb.edu.co/handle/20.500.11912/7209
• https://repository.upb.edu.co/handle/20.500.11912/524
• https://repository.upb.edu.co/handle/20.500.11912/9743
• https://repository.upb.edu.co/handle/20.500.11912/2368
• https://repository.upb.edu.co/handle/20.500.11912/10164
• https://repository.upb.edu.co/handle/20.500.11912/3635
• https://repository.upb.edu.co/handle/20.500.11912/3606
• https://repository.upb.edu.co/handle/20.500.11912/655
• https://repository.upb.edu.co/handle/20.500.11912/8460
• https://repository.upb.edu.co/handle/20.500.11912/6886
• https://repository.upb.edu.co/handle/20.500.11912/12131
• https://repository.upb.edu.co/handle/20.500.11912/1475
• https://repository.upb.edu.co/handle/20.500.11912/8919