http://repositorio.utmachala.edu.ec/handle/48000/10888
http://repositorio.utmachala.edu.ec/handle/48000/10892
http://repositorio.utmachala.edu.ec/handle/48000/10893
http://repositorio.utmachala.edu.ec/handle/48000/10896
http://repositorio.utmachala.edu.ec/handle/48000/10871
http://repositorio.utmachala.edu.ec/handle/48000/10844
http://repositorio.utmachala.edu.ec/handle/48000/9006
http://repositorio.utmachala.edu.ec/handle/48000/265
http://repositorio.utmachala.edu.ec/handle/48000/578
http://repositorio.utmachala.edu.ec/handle/48000/8724
http://repositorio.utmachala.edu.ec/handle/48000/8719
http://repositorio.utmachala.edu.ec/handle/48000/8720
http://repositorio.utmachala.edu.ec/handle/48000/10841
http://repositorio.utmachala.edu.ec/handle/48000/8723
http://repositorio.utmachala.edu.ec/handle/48000/8725
http://repositorio.utmachala.edu.ec/handle/48000/8726
http://repositorio.utmachala.edu.ec/handle/48000/10838
http://repositorio.utmachala.edu.ec/handle/48000/8721
http://repositorio.utmachala.edu.ec/handle/48000/8727
http://repositorio.utmachala.edu.ec/handle/48000/8699
http://repositorio.utmachala.edu.ec/handle/48000/9837
http://repositorio.utmachala.edu.ec/handle/48000/9572
http://repositorio.utmachala.edu.ec/handle/48000/9077
http://repositorio.utmachala.edu.ec/handle/48000/8705
http://repositorio.utmachala.edu.ec/handle/48000/8715
http://repositorio.utmachala.edu.ec/handle/48000/11990
http://repositorio.utmachala.edu.ec/handle/48000/9091
http://repositorio.utmachala.edu.ec/handle/48000/12273
http://repositorio.utmachala.edu.ec/handle/48000/9084
http://repositorio.utmachala.edu.ec/handle/48000/9095
http://repositorio.utmachala.edu.ec/handle/48000/8745
http://repositorio.utmachala.edu.ec/handle/48000/8742
http://repositorio.utmachala.edu.ec/handle/48000/8741
http://repositorio.utmachala.edu.ec/handle/48000/9570
http://repositorio.utmachala.edu.ec/handle/48000/9826
http://repositorio.utmachala.edu.ec/handle/48000/9825
http://repositorio.utmachala.edu.ec/handle/48000/9082
http://repositorio.utmachala.edu.ec/handle/48000/9090
http://repositorio.utmachala.edu.ec/handle/48000/9824
http://repositorio.utmachala.edu.ec/handle/48000/9353
http://repositorio.utmachala.edu.ec/handle/48000/10925
http://repositorio.utmachala.edu.ec/handle/48000/10848
http://repositorio.utmachala.edu.ec/handle/48000/9094
http://repositorio.utmachala.edu.ec/handle/48000/9081
http://repositorio.utmachala.edu.ec/handle/48000/10883
http://repositorio.utmachala.edu.ec/handle/48000/10884
http://repositorio.utmachala.edu.ec/handle/48000/9349
http://repositorio.utmachala.edu.ec/handle/48000/10147
http://repositorio.utmachala.edu.ec/handle/48000/10165
http://repositorio.utmachala.edu.ec/handle/48000/10886
http://repositorio.utmachala.edu.ec/handle/48000/10151
http://repositorio.utmachala.edu.ec/handle/48000/10158
http://repositorio.utmachala.edu.ec/handle/48000/661
http://repositorio.utmachala.edu.ec/handle/48000/9362
http://repositorio.utmachala.edu.ec/handle/48000/9338
http://repositorio.utmachala.edu.ec/handle/48000/9371
http://repositorio.utmachala.edu.ec/handle/48000/9688
http://repositorio.utmachala.edu.ec/handle/48000/9340
http://repositorio.utmachala.edu.ec/handle/48000/9690
http://repositorio.utmachala.edu.ec/handle/48000/9680
http://repositorio.utmachala.edu.ec/handle/48000/9357
http://repositorio.utmachala.edu.ec/handle/48000/9361
http://repositorio.utmachala.edu.ec/handle/48000/9681
http://repositorio.utmachala.edu.ec/handle/48000/10812
http://repositorio.utmachala.edu.ec/handle/48000/8701
http://repositorio.utmachala.edu.ec/handle/48000/8702
http://repositorio.utmachala.edu.ec/handle/48000/8706
http://repositorio.utmachala.edu.ec/handle/48000/8714
http://repositorio.utmachala.edu.ec/handle/48000/8717
http://repositorio.utmachala.edu.ec/handle/48000/8722
http://repositorio.utmachala.edu.ec/handle/48000/10811
http://repositorio.utmachala.edu.ec/handle/48000/10815
http://repositorio.utmachala.edu.ec/handle/48000/9776
http://repositorio.utmachala.edu.ec/handle/48000/9770
http://repositorio.utmachala.edu.ec/handle/48000/9781
http://repositorio.utmachala.edu.ec/handle/48000/9751
http://repositorio.utmachala.edu.ec/handle/48000/9774
http://repositorio.utmachala.edu.ec/handle/48000/9782
http://repositorio.utmachala.edu.ec/handle/48000/8716
http://repositorio.utmachala.edu.ec/handle/48000/9833
http://repositorio.utmachala.edu.ec/handle/48000/9839
http://repositorio.utmachala.edu.ec/handle/48000/9836
http://repositorio.utmachala.edu.ec/handle/48000/10843
http://repositorio.utmachala.edu.ec/handle/48000/10897
http://repositorio.utmachala.edu.ec/handle/48000/10907
http://repositorio.utmachala.edu.ec/handle/48000/10923
http://repositorio.utmachala.edu.ec/handle/48000/10842
http://repositorio.utmachala.edu.ec/handle/48000/10839
http://repositorio.utmachala.edu.ec/handle/48000/10875
http://repositorio.utmachala.edu.ec/handle/48000/10930
http://repositorio.utmachala.edu.ec/handle/48000/10898
http://repositorio.utmachala.edu.ec/handle/48000/10887
http://repositorio.utmachala.edu.ec/handle/48000/10905
http://repositorio.utmachala.edu.ec/handle/48000/10881
http://repositorio.utmachala.edu.ec/handle/48000/10880
http://repositorio.utmachala.edu.ec/handle/48000/10926
http://repositorio.utmachala.edu.ec/handle/48000/10847
http://repositorio.utmachala.edu.ec/handle/48000/10807
http://repositorio.utmachala.edu.ec/handle/48000/10830
http://repositorio.utmachala.edu.ec/handle/48000/10832
http://repositorio.utmachala.edu.ec/handle/48000/10929
http://repositorio.utmachala.edu.ec/handle/48000/10906
http://repositorio.utmachala.edu.ec/handle/48000/876
http://repositorio.utmachala.edu.ec/handle/48000/9354
http://repositorio.utmachala.edu.ec/handle/48000/9363
http://repositorio.utmachala.edu.ec/handle/48000/9365
http://repositorio.utmachala.edu.ec/handle/48000/8730
http://repositorio.utmachala.edu.ec/handle/48000/9366
http://repositorio.utmachala.edu.ec/handle/48000/9370
http://repositorio.utmachala.edu.ec/handle/48000/9009
http://repositorio.utmachala.edu.ec/handle/48000/9016
http://repositorio.utmachala.edu.ec/handle/48000/10152
http://repositorio.utmachala.edu.ec/handle/48000/9580
http://repositorio.utmachala.edu.ec/handle/48000/9579
http://repositorio.utmachala.edu.ec/handle/48000/12267
http://repositorio.utmachala.edu.ec/handle/48000/9080
http://repositorio.utmachala.edu.ec/handle/48000/10836
http://repositorio.utmachala.edu.ec/handle/48000/9085
http://repositorio.utmachala.edu.ec/handle/48000/9007
http://repositorio.utmachala.edu.ec/handle/48000/10828
http://repositorio.utmachala.edu.ec/handle/48000/10829
http://repositorio.utmachala.edu.ec/handle/48000/9356
http://repositorio.utmachala.edu.ec/handle/48000/9106
http://repositorio.utmachala.edu.ec/handle/48000/9358
http://repositorio.utmachala.edu.ec/handle/48000/10162
http://repositorio.utmachala.edu.ec/handle/48000/10150
http://repositorio.utmachala.edu.ec/handle/48000/9364
http://repositorio.utmachala.edu.ec/handle/48000/9368
http://repositorio.utmachala.edu.ec/handle/48000/10154
http://repositorio.utmachala.edu.ec/handle/48000/10819
http://repositorio.utmachala.edu.ec/handle/48000/10170
http://repositorio.utmachala.edu.ec/handle/48000/10159
http://repositorio.utmachala.edu.ec/handle/48000/10167
http://repositorio.utmachala.edu.ec/handle/48000/12271
http://repositorio.utmachala.edu.ec/handle/48000/9756
http://repositorio.utmachala.edu.ec/handle/48000/9752
http://repositorio.utmachala.edu.ec/handle/48000/9753
http://repositorio.utmachala.edu.ec/handle/48000/9754
http://repositorio.utmachala.edu.ec/handle/48000/9838
http://repositorio.utmachala.edu.ec/handle/48000/10814
http://repositorio.utmachala.edu.ec/handle/48000/10813
http://repositorio.utmachala.edu.ec/handle/48000/12274
http://repositorio.utmachala.edu.ec/handle/48000/10835
http://repositorio.utmachala.edu.ec/handle/48000/10831
http://repositorio.utmachala.edu.ec/handle/48000/10834
http://repositorio.utmachala.edu.ec/handle/48000/10171
http://repositorio.utmachala.edu.ec/handle/48000/7407
http://repositorio.utmachala.edu.ec/handle/48000/7405
http://repositorio.utmachala.edu.ec/handle/48000/7404
http://repositorio.utmachala.edu.ec/handle/48000/7409
http://repositorio.utmachala.edu.ec/handle/48000/7406
http://repositorio.utmachala.edu.ec/handle/48000/7424
http://repositorio.utmachala.edu.ec/handle/48000/7422
http://repositorio.utmachala.edu.ec/handle/48000/12263
http://repositorio.utmachala.edu.ec/handle/48000/12264
http://repositorio.utmachala.edu.ec/handle/48000/839
http://repositorio.utmachala.edu.ec/handle/48000/9601
http://repositorio.utmachala.edu.ec/handle/48000/9606
http://repositorio.utmachala.edu.ec/handle/48000/9607
http://repositorio.utmachala.edu.ec/handle/48000/9008
http://repositorio.utmachala.edu.ec/handle/48000/9847
http://repositorio.utmachala.edu.ec/handle/48000/9352
http://repositorio.utmachala.edu.ec/handle/48000/10890
http://repositorio.utmachala.edu.ec/handle/48000/8709
http://repositorio.utmachala.edu.ec/handle/48000/9367
http://repositorio.utmachala.edu.ec/handle/48000/11992
http://repositorio.utmachala.edu.ec/handle/48000/9832
http://repositorio.utmachala.edu.ec/handle/48000/8718
http://repositorio.utmachala.edu.ec/handle/48000/10899
http://repositorio.utmachala.edu.ec/handle/48000/9348
http://repositorio.utmachala.edu.ec/handle/48000/10822
http://repositorio.utmachala.edu.ec/handle/48000/9351
http://repositorio.utmachala.edu.ec/handle/48000/9576
http://repositorio.utmachala.edu.ec/handle/48000/10901
http://repositorio.utmachala.edu.ec/handle/48000/8704
http://repositorio.utmachala.edu.ec/handle/48000/8743
http://repositorio.utmachala.edu.ec/handle/48000/9079
http://repositorio.utmachala.edu.ec/handle/48000/12270
http://repositorio.utmachala.edu.ec/handle/48000/9089
http://repositorio.utmachala.edu.ec/handle/48000/9097
http://repositorio.utmachala.edu.ec/handle/48000/9098
http://repositorio.utmachala.edu.ec/handle/48000/10168
http://repositorio.utmachala.edu.ec/handle/48000/10155
http://repositorio.utmachala.edu.ec/handle/48000/10148
http://repositorio.utmachala.edu.ec/handle/48000/10160
http://repositorio.utmachala.edu.ec/handle/48000/10156
http://repositorio.utmachala.edu.ec/handle/48000/10166
http://repositorio.utmachala.edu.ec/handle/48000/9102
http://repositorio.utmachala.edu.ec/handle/48000/10161
http://repositorio.utmachala.edu.ec/handle/48000/10157
http://repositorio.utmachala.edu.ec/handle/48000/9347
http://repositorio.utmachala.edu.ec/handle/48000/9350
http://repositorio.utmachala.edu.ec/handle/48000/10164
http://repositorio.utmachala.edu.ec/handle/48000/681
http://repositorio.utmachala.edu.ec/handle/48000/4222
http://repositorio.utmachala.edu.ec/handle/48000/8729
http://repositorio.utmachala.edu.ec/handle/48000/8734
http://repositorio.utmachala.edu.ec/handle/48000/8708
http://repositorio.utmachala.edu.ec/handle/48000/9092
http://repositorio.utmachala.edu.ec/handle/48000/9013
http://repositorio.utmachala.edu.ec/handle/48000/8713
http://repositorio.utmachala.edu.ec/handle/48000/8710
http://repositorio.utmachala.edu.ec/handle/48000/8712
http://repositorio.utmachala.edu.ec/handle/48000/8711
http://repositorio.utmachala.edu.ec/handle/48000/9010
http://repositorio.utmachala.edu.ec/handle/48000/8732
http://repositorio.utmachala.edu.ec/handle/48000/8733
http://repositorio.utmachala.edu.ec/handle/48000/9017
http://repositorio.utmachala.edu.ec/handle/48000/8728
http://repositorio.utmachala.edu.ec/handle/48000/9093
http://repositorio.utmachala.edu.ec/handle/48000/9087
http://repositorio.utmachala.edu.ec/handle/48000/9113
http://repositorio.utmachala.edu.ec/handle/48000/9086
http://repositorio.utmachala.edu.ec/handle/48000/9114
http://repositorio.utmachala.edu.ec/handle/48000/9088
http://repositorio.utmachala.edu.ec/handle/48000/9105
http://repositorio.utmachala.edu.ec/handle/48000/9101
http://repositorio.utmachala.edu.ec/handle/48000/2937
http://repositorio.utmachala.edu.ec/handle/48000/9112
http://repositorio.utmachala.edu.ec/handle/48000/9115
http://repositorio.utmachala.edu.ec/handle/48000/9083
http://repositorio.utmachala.edu.ec/handle/48000/9103
http://repositorio.utmachala.edu.ec/handle/48000/9590
http://repositorio.utmachala.edu.ec/handle/48000/9100
http://repositorio.utmachala.edu.ec/handle/48000/9110
http://repositorio.utmachala.edu.ec/handle/48000/9099
http://repositorio.utmachala.edu.ec/handle/48000/9096
http://repositorio.utmachala.edu.ec/handle/48000/9104
http://repositorio.utmachala.edu.ec/handle/48000/9384
http://repositorio.utmachala.edu.ec/handle/48000/9108
http://repositorio.utmachala.edu.ec/handle/48000/9117
http://repositorio.utmachala.edu.ec/handle/48000/9121
http://repositorio.utmachala.edu.ec/handle/48000/10173
http://repositorio.utmachala.edu.ec/handle/48000/9596
http://repositorio.utmachala.edu.ec/handle/48000/9116
http://repositorio.utmachala.edu.ec/handle/48000/7412
http://repositorio.utmachala.edu.ec/handle/48000/7413
http://repositorio.utmachala.edu.ec/handle/48000/7421
http://repositorio.utmachala.edu.ec/handle/48000/7423
http://repositorio.utmachala.edu.ec/handle/48000/7379
http://repositorio.utmachala.edu.ec/handle/48000/7387
http://repositorio.utmachala.edu.ec/handle/48000/7382
http://repositorio.utmachala.edu.ec/handle/48000/9376
http://repositorio.utmachala.edu.ec/handle/48000/9012
http://repositorio.utmachala.edu.ec/handle/48000/9399
http://repositorio.utmachala.edu.ec/handle/48000/9577
http://repositorio.utmachala.edu.ec/handle/48000/2932
http://repositorio.utmachala.edu.ec/handle/48000/9589
http://repositorio.utmachala.edu.ec/handle/48000/9578
http://repositorio.utmachala.edu.ec/handle/48000/9388
http://repositorio.utmachala.edu.ec/handle/48000/9575
http://repositorio.utmachala.edu.ec/handle/48000/4217
http://repositorio.utmachala.edu.ec/handle/48000/8707
http://repositorio.utmachala.edu.ec/handle/48000/4220
http://repositorio.utmachala.edu.ec/handle/48000/4225
http://repositorio.utmachala.edu.ec/handle/48000/4226
http://repositorio.utmachala.edu.ec/handle/48000/4229
http://repositorio.utmachala.edu.ec/handle/48000/4230
http://repositorio.utmachala.edu.ec/handle/48000/4233
http://repositorio.utmachala.edu.ec/handle/48000/9404
http://repositorio.utmachala.edu.ec/handle/48000/4235
http://repositorio.utmachala.edu.ec/handle/48000/4237
http://repositorio.utmachala.edu.ec/handle/48000/4231
http://repositorio.utmachala.edu.ec/handle/48000/4232
http://repositorio.utmachala.edu.ec/handle/48000/4238
http://repositorio.utmachala.edu.ec/handle/48000/4239
http://repositorio.utmachala.edu.ec/handle/48000/4240
http://repositorio.utmachala.edu.ec/handle/48000/4241
http://repositorio.utmachala.edu.ec/handle/48000/9403
http://repositorio.utmachala.edu.ec/handle/48000/4247
http://repositorio.utmachala.edu.ec/handle/48000/4250
http://repositorio.utmachala.edu.ec/handle/48000/9391
http://repositorio.utmachala.edu.ec/handle/48000/9400
http://repositorio.utmachala.edu.ec/handle/48000/9389
http://repositorio.utmachala.edu.ec/handle/48000/9393
http://repositorio.utmachala.edu.ec/handle/48000/9395
http://repositorio.utmachala.edu.ec/handle/48000/9014
http://repositorio.utmachala.edu.ec/handle/48000/9405
http://repositorio.utmachala.edu.ec/handle/48000/9015
http://repositorio.utmachala.edu.ec/handle/48000/9598
http://repositorio.utmachala.edu.ec/handle/48000/10816
http://repositorio.utmachala.edu.ec/handle/48000/10817
http://repositorio.utmachala.edu.ec/handle/48000/10825
http://repositorio.utmachala.edu.ec/handle/48000/10827
http://repositorio.utmachala.edu.ec/handle/48000/4236
http://repositorio.utmachala.edu.ec/handle/48000/10891
http://repositorio.utmachala.edu.ec/handle/48000/4242
http://repositorio.utmachala.edu.ec/handle/48000/9407
http://repositorio.utmachala.edu.ec/handle/48000/4219
http://repositorio.utmachala.edu.ec/handle/48000/9386
http://repositorio.utmachala.edu.ec/handle/48000/10895
http://repositorio.utmachala.edu.ec/handle/48000/9011
http://repositorio.utmachala.edu.ec/handle/48000/9605
http://repositorio.utmachala.edu.ec/handle/48000/9755
http://repositorio.utmachala.edu.ec/handle/48000/9603
http://repositorio.utmachala.edu.ec/handle/48000/9604
http://repositorio.utmachala.edu.ec/handle/48000/9758
http://repositorio.utmachala.edu.ec/handle/48000/9759
http://repositorio.utmachala.edu.ec/handle/48000/9760
http://repositorio.utmachala.edu.ec/handle/48000/2939
http://repositorio.utmachala.edu.ec/handle/48000/4256
http://repositorio.utmachala.edu.ec/handle/48000/8737
http://repositorio.utmachala.edu.ec/handle/48000/8735
http://repositorio.utmachala.edu.ec/handle/48000/10818
http://repositorio.utmachala.edu.ec/handle/48000/12288
http://repositorio.utmachala.edu.ec/handle/48000/8763
http://repositorio.utmachala.edu.ec/handle/48000/9111
http://repositorio.utmachala.edu.ec/handle/48000/4255
http://repositorio.utmachala.edu.ec/handle/48000/4248
http://repositorio.utmachala.edu.ec/handle/48000/8739
http://repositorio.utmachala.edu.ec/handle/48000/8759
http://repositorio.utmachala.edu.ec/handle/48000/9109
http://repositorio.utmachala.edu.ec/handle/48000/9107
http://repositorio.utmachala.edu.ec/handle/48000/9119
http://repositorio.utmachala.edu.ec/handle/48000/4253
http://repositorio.utmachala.edu.ec/handle/48000/4258
http://repositorio.utmachala.edu.ec/handle/48000/4259
http://repositorio.utmachala.edu.ec/handle/48000/4260
http://repositorio.utmachala.edu.ec/handle/48000/4262
http://repositorio.utmachala.edu.ec/handle/48000/4264
http://repositorio.utmachala.edu.ec/handle/48000/4265
http://repositorio.utmachala.edu.ec/handle/48000/4268
http://repositorio.utmachala.edu.ec/handle/48000/9374
http://repositorio.utmachala.edu.ec/handle/48000/4269
http://repositorio.utmachala.edu.ec/handle/48000/4270
http://repositorio.utmachala.edu.ec/handle/48000/9594
http://repositorio.utmachala.edu.ec/handle/48000/9382
http://repositorio.utmachala.edu.ec/handle/48000/9587
http://repositorio.utmachala.edu.ec/handle/48000/9387
http://repositorio.utmachala.edu.ec/handle/48000/9409
http://repositorio.utmachala.edu.ec/handle/48000/9020
http://repositorio.utmachala.edu.ec/handle/48000/9038
http://repositorio.utmachala.edu.ec/handle/48000/9599
http://repositorio.utmachala.edu.ec/handle/48000/10178
http://repositorio.utmachala.edu.ec/handle/48000/9586
http://repositorio.utmachala.edu.ec/handle/48000/9379
http://repositorio.utmachala.edu.ec/handle/48000/10179
http://repositorio.utmachala.edu.ec/handle/48000/10820
http://repositorio.utmachala.edu.ec/handle/48000/10826
http://repositorio.utmachala.edu.ec/handle/48000/10824
http://repositorio.utmachala.edu.ec/handle/48000/9600
http://repositorio.utmachala.edu.ec/handle/48000/9584
http://repositorio.utmachala.edu.ec/handle/48000/10823
http://repositorio.utmachala.edu.ec/handle/48000/9375
http://repositorio.utmachala.edu.ec/handle/48000/9380
http://repositorio.utmachala.edu.ec/handle/48000/9390
http://repositorio.utmachala.edu.ec/handle/48000/7425
http://repositorio.utmachala.edu.ec/handle/48000/9583
http://repositorio.utmachala.edu.ec/handle/48000/7427
http://repositorio.utmachala.edu.ec/handle/48000/7373
http://repositorio.utmachala.edu.ec/handle/48000/7385
http://repositorio.utmachala.edu.ec/handle/48000/7376
http://repositorio.utmachala.edu.ec/handle/48000/7372
http://repositorio.utmachala.edu.ec/handle/48000/7426
http://repositorio.utmachala.edu.ec/handle/48000/9582
http://repositorio.utmachala.edu.ec/handle/48000/9581
http://repositorio.utmachala.edu.ec/handle/48000/9039
http://repositorio.utmachala.edu.ec/handle/48000/9032
http://repositorio.utmachala.edu.ec/handle/48000/9018
http://repositorio.utmachala.edu.ec/handle/48000/9033
http://repositorio.utmachala.edu.ec/handle/48000/9042
http://repositorio.utmachala.edu.ec/handle/48000/9019
http://repositorio.utmachala.edu.ec/handle/48000/9034
http://repositorio.utmachala.edu.ec/handle/48000/9023
http://repositorio.utmachala.edu.ec/handle/48000/10919
http://repositorio.utmachala.edu.ec/handle/48000/10917
http://repositorio.utmachala.edu.ec/handle/48000/10900
http://repositorio.utmachala.edu.ec/handle/48000/10914
http://repositorio.utmachala.edu.ec/handle/48000/10902
http://repositorio.utmachala.edu.ec/handle/48000/10920
http://repositorio.utmachala.edu.ec/handle/48000/10833
http://repositorio.utmachala.edu.ec/handle/48000/10200
http://repositorio.utmachala.edu.ec/handle/48000/10193
http://repositorio.utmachala.edu.ec/handle/48000/10203
http://repositorio.utmachala.edu.ec/handle/48000/10191
http://repositorio.utmachala.edu.ec/handle/48000/10197
http://repositorio.utmachala.edu.ec/handle/48000/10204
http://repositorio.utmachala.edu.ec/handle/48000/10177
http://repositorio.utmachala.edu.ec/handle/48000/12275
http://repositorio.utmachala.edu.ec/handle/48000/12276
http://repositorio.utmachala.edu.ec/handle/48000/12277
http://repositorio.utmachala.edu.ec/handle/48000/2196
http://repositorio.utmachala.edu.ec/handle/48000/7417
http://repositorio.utmachala.edu.ec/handle/48000/7391
http://repositorio.utmachala.edu.ec/handle/48000/7392
http://repositorio.utmachala.edu.ec/handle/48000/7389
http://repositorio.utmachala.edu.ec/handle/48000/7390