URL List

https://repositorio.upn.edu.pe/handle/11537/33151
https://repositorio.upn.edu.pe/handle/11537/33152
https://repositorio.upn.edu.pe/handle/11537/33155
https://repositorio.upn.edu.pe/handle/11537/33156
https://repositorio.upn.edu.pe/handle/11537/33141
https://repositorio.upn.edu.pe/handle/11537/33154
https://repositorio.upn.edu.pe/handle/11537/33157
https://repositorio.upn.edu.pe/handle/11537/33158
https://repositorio.upn.edu.pe/handle/11537/33159
https://repositorio.upn.edu.pe/handle/11537/33160
https://repositorio.upn.edu.pe/handle/11537/33161
https://repositorio.upn.edu.pe/handle/11537/33162
https://repositorio.upn.edu.pe/handle/11537/33163
https://repositorio.upn.edu.pe/handle/11537/33165
https://repositorio.upn.edu.pe/handle/11537/33167
https://repositorio.upn.edu.pe/handle/11537/33169
https://repositorio.upn.edu.pe/handle/11537/33170
https://repositorio.upn.edu.pe/handle/11537/33171
https://repositorio.upn.edu.pe/handle/11537/33172
https://repositorio.upn.edu.pe/handle/11537/33173
https://repositorio.upn.edu.pe/handle/11537/33174
https://repositorio.upn.edu.pe/handle/11537/33175
https://repositorio.upn.edu.pe/handle/11537/33176
https://repositorio.upn.edu.pe/handle/11537/33127
https://repositorio.upn.edu.pe/handle/11537/33128
https://repositorio.upn.edu.pe/handle/11537/33130
https://repositorio.upn.edu.pe/handle/11537/33133
https://repositorio.upn.edu.pe/handle/11537/33139
https://repositorio.upn.edu.pe/handle/11537/33142
https://repositorio.upn.edu.pe/handle/11537/33150
https://repositorio.upn.edu.pe/handle/11537/33153
https://repositorio.upn.edu.pe/handle/11537/33168
https://repositorio.upn.edu.pe/handle/11537/33129
https://repositorio.upn.edu.pe/handle/11537/33131
https://repositorio.upn.edu.pe/handle/11537/33135
https://repositorio.upn.edu.pe/handle/11537/33138
https://repositorio.upn.edu.pe/handle/11537/33137
https://repositorio.upn.edu.pe/handle/11537/33143
https://repositorio.upn.edu.pe/handle/11537/33164
https://repositorio.upn.edu.pe/handle/11537/33166
https://repositorio.upn.edu.pe/handle/11537/33177
https://repositorio.upn.edu.pe/handle/11537/33178
https://repositorio.upn.edu.pe/handle/11537/33180
https://repositorio.upn.edu.pe/handle/11537/33181
https://repositorio.upn.edu.pe/handle/11537/33182
https://repositorio.upn.edu.pe/handle/11537/33183
https://repositorio.upn.edu.pe/handle/11537/33184
https://repositorio.upn.edu.pe/handle/11537/33185
https://repositorio.upn.edu.pe/handle/11537/33186
https://repositorio.upn.edu.pe/handle/11537/33187
https://repositorio.upn.edu.pe/handle/11537/33188
https://repositorio.upn.edu.pe/handle/11537/33189
https://repositorio.upn.edu.pe/handle/11537/33190
https://repositorio.upn.edu.pe/handle/11537/33191
https://repositorio.upn.edu.pe/handle/11537/33192
https://repositorio.upn.edu.pe/handle/11537/33179
https://repositorio.upn.edu.pe/handle/11537/33211
https://repositorio.upn.edu.pe/handle/11537/33212
https://repositorio.upn.edu.pe/handle/11537/33213
https://repositorio.upn.edu.pe/handle/11537/33214
https://repositorio.upn.edu.pe/handle/11537/33215
https://repositorio.upn.edu.pe/handle/11537/33216
https://repositorio.upn.edu.pe/handle/11537/33193
https://repositorio.upn.edu.pe/handle/11537/33194
https://repositorio.upn.edu.pe/handle/11537/33195
https://repositorio.upn.edu.pe/handle/11537/33196
https://repositorio.upn.edu.pe/handle/11537/33197
https://repositorio.upn.edu.pe/handle/11537/33198
https://repositorio.upn.edu.pe/handle/11537/33200
https://repositorio.upn.edu.pe/handle/11537/33201
https://repositorio.upn.edu.pe/handle/11537/33202
https://repositorio.upn.edu.pe/handle/11537/33203
https://repositorio.upn.edu.pe/handle/11537/33204
https://repositorio.upn.edu.pe/handle/11537/33205
https://repositorio.upn.edu.pe/handle/11537/33206
https://repositorio.upn.edu.pe/handle/11537/33207
https://repositorio.upn.edu.pe/handle/11537/33208
https://repositorio.upn.edu.pe/handle/11537/33209
https://repositorio.upn.edu.pe/handle/11537/33210
https://repositorio.upn.edu.pe/handle/11537/33199
https://repositorio.upn.edu.pe/handle/11537/33217
https://repositorio.upn.edu.pe/handle/11537/33218
https://repositorio.upn.edu.pe/handle/11537/33219
https://repositorio.upn.edu.pe/handle/11537/33220
https://repositorio.upn.edu.pe/handle/11537/33222
https://repositorio.upn.edu.pe/handle/11537/33223
https://repositorio.upn.edu.pe/handle/11537/33224
https://repositorio.upn.edu.pe/handle/11537/33225
https://repositorio.upn.edu.pe/handle/11537/33226
https://repositorio.upn.edu.pe/handle/11537/33227
https://repositorio.upn.edu.pe/handle/11537/33229
https://repositorio.upn.edu.pe/handle/11537/33230
https://repositorio.upn.edu.pe/handle/11537/33231
https://repositorio.upn.edu.pe/handle/11537/33232
https://repositorio.upn.edu.pe/handle/11537/33233
https://repositorio.upn.edu.pe/handle/11537/33234
https://repositorio.upn.edu.pe/handle/11537/33221
https://repositorio.upn.edu.pe/handle/11537/33228
https://repositorio.upn.edu.pe/handle/11537/33235
https://repositorio.upn.edu.pe/handle/11537/33236
https://repositorio.upn.edu.pe/handle/11537/33237
https://repositorio.upn.edu.pe/handle/11537/33238
https://repositorio.upn.edu.pe/handle/11537/33239
https://repositorio.upn.edu.pe/handle/11537/33240
https://repositorio.upn.edu.pe/handle/11537/33241
https://repositorio.upn.edu.pe/handle/11537/33242
https://repositorio.upn.edu.pe/handle/11537/33243
https://repositorio.upn.edu.pe/handle/11537/33244
https://repositorio.upn.edu.pe/handle/11537/33245
https://repositorio.upn.edu.pe/handle/11537/33246
https://repositorio.upn.edu.pe/handle/11537/33247
https://repositorio.upn.edu.pe/handle/11537/33249
https://repositorio.upn.edu.pe/handle/11537/33250
https://repositorio.upn.edu.pe/handle/11537/33252
https://repositorio.upn.edu.pe/handle/11537/33248
https://repositorio.upn.edu.pe/handle/11537/33253
https://repositorio.upn.edu.pe/handle/11537/33254
https://repositorio.upn.edu.pe/handle/11537/33256
https://repositorio.upn.edu.pe/handle/11537/33257
https://repositorio.upn.edu.pe/handle/11537/33251
https://repositorio.upn.edu.pe/handle/11537/33258
https://repositorio.upn.edu.pe/handle/11537/33259
https://repositorio.upn.edu.pe/handle/11537/33262
https://repositorio.upn.edu.pe/handle/11537/33263
https://repositorio.upn.edu.pe/handle/11537/33264
https://repositorio.upn.edu.pe/handle/11537/33265
https://repositorio.upn.edu.pe/handle/11537/33266
https://repositorio.upn.edu.pe/handle/11537/33267
https://repositorio.upn.edu.pe/handle/11537/33268
https://repositorio.upn.edu.pe/handle/11537/33269
https://repositorio.upn.edu.pe/handle/11537/33270
https://repositorio.upn.edu.pe/handle/11537/33271
https://repositorio.upn.edu.pe/handle/11537/33272
https://repositorio.upn.edu.pe/handle/11537/33274
https://repositorio.upn.edu.pe/handle/11537/33275
https://repositorio.upn.edu.pe/handle/11537/33276
https://repositorio.upn.edu.pe/handle/11537/33277
https://repositorio.upn.edu.pe/handle/11537/33279
https://repositorio.upn.edu.pe/handle/11537/33280
https://repositorio.upn.edu.pe/handle/11537/33282
https://repositorio.upn.edu.pe/handle/11537/33278
https://repositorio.upn.edu.pe/handle/11537/33281
https://repositorio.upn.edu.pe/handle/11537/33283
https://repositorio.upn.edu.pe/handle/11537/33285
https://repositorio.upn.edu.pe/handle/11537/33286
https://repositorio.upn.edu.pe/handle/11537/33293
https://repositorio.upn.edu.pe/handle/11537/33260
https://repositorio.upn.edu.pe/handle/11537/33273
https://repositorio.upn.edu.pe/handle/11537/33284
https://repositorio.upn.edu.pe/handle/11537/33287
https://repositorio.upn.edu.pe/handle/11537/33288
https://repositorio.upn.edu.pe/handle/11537/33289
https://repositorio.upn.edu.pe/handle/11537/33290
https://repositorio.upn.edu.pe/handle/11537/33291
https://repositorio.upn.edu.pe/handle/11537/33292
https://repositorio.upn.edu.pe/handle/11537/33295
https://repositorio.upn.edu.pe/handle/11537/33297
https://repositorio.upn.edu.pe/handle/11537/33296
https://repositorio.upn.edu.pe/handle/11537/33298
https://repositorio.upn.edu.pe/handle/11537/33300
https://repositorio.upn.edu.pe/handle/11537/33301
https://repositorio.upn.edu.pe/handle/11537/33302
https://repositorio.upn.edu.pe/handle/11537/33303
https://repositorio.upn.edu.pe/handle/11537/33304
https://repositorio.upn.edu.pe/handle/11537/33255
https://repositorio.upn.edu.pe/handle/11537/33261
https://repositorio.upn.edu.pe/handle/11537/33305
https://repositorio.upn.edu.pe/handle/11537/33306
https://repositorio.upn.edu.pe/handle/11537/33307
https://repositorio.upn.edu.pe/handle/11537/33309
https://repositorio.upn.edu.pe/handle/11537/33311
https://repositorio.upn.edu.pe/handle/11537/33312
https://repositorio.upn.edu.pe/handle/11537/33314
https://repositorio.upn.edu.pe/handle/11537/33315
https://repositorio.upn.edu.pe/handle/11537/33316
https://repositorio.upn.edu.pe/handle/11537/33317
https://repositorio.upn.edu.pe/handle/11537/33319
https://repositorio.upn.edu.pe/handle/11537/33320
https://repositorio.upn.edu.pe/handle/11537/33322
https://repositorio.upn.edu.pe/handle/11537/33324
https://repositorio.upn.edu.pe/handle/11537/33325
https://repositorio.upn.edu.pe/handle/11537/33326
https://repositorio.upn.edu.pe/handle/11537/33327
https://repositorio.upn.edu.pe/handle/11537/33328
https://repositorio.upn.edu.pe/handle/11537/33329
https://repositorio.upn.edu.pe/handle/11537/33299
https://repositorio.upn.edu.pe/handle/11537/33308
https://repositorio.upn.edu.pe/handle/11537/33310
https://repositorio.upn.edu.pe/handle/11537/33313
https://repositorio.upn.edu.pe/handle/11537/33321
https://repositorio.upn.edu.pe/handle/11537/33323
https://repositorio.upn.edu.pe/handle/11537/33318
https://repositorio.upn.edu.pe/handle/11537/33330
https://repositorio.upn.edu.pe/handle/11537/33331
https://repositorio.upn.edu.pe/handle/11537/33332
https://repositorio.upn.edu.pe/handle/11537/33333
https://repositorio.upn.edu.pe/handle/11537/33334
https://repositorio.upn.edu.pe/handle/11537/33342
https://repositorio.upn.edu.pe/handle/11537/33343
https://repositorio.upn.edu.pe/handle/11537/33344
https://repositorio.upn.edu.pe/handle/11537/33346
https://repositorio.upn.edu.pe/handle/11537/33348
https://repositorio.upn.edu.pe/handle/11537/33336
https://repositorio.upn.edu.pe/handle/11537/33337
https://repositorio.upn.edu.pe/handle/11537/33338
https://repositorio.upn.edu.pe/handle/11537/33339
https://repositorio.upn.edu.pe/handle/11537/33340
https://repositorio.upn.edu.pe/handle/11537/33341
https://repositorio.upn.edu.pe/handle/11537/33345
https://repositorio.upn.edu.pe/handle/11537/33335
https://repositorio.upn.edu.pe/handle/11537/33347
https://repositorio.upn.edu.pe/handle/11537/33349
https://repositorio.upn.edu.pe/handle/11537/33350
https://repositorio.upn.edu.pe/handle/11537/33351
https://repositorio.upn.edu.pe/handle/11537/33352
https://repositorio.upn.edu.pe/handle/11537/33354
https://repositorio.upn.edu.pe/handle/11537/33353
https://repositorio.upn.edu.pe/handle/11537/33356
https://repositorio.upn.edu.pe/handle/11537/33359
https://repositorio.upn.edu.pe/handle/11537/33360
https://repositorio.upn.edu.pe/handle/11537/33361
https://repositorio.upn.edu.pe/handle/11537/33362
https://repositorio.upn.edu.pe/handle/11537/33363
https://repositorio.upn.edu.pe/handle/11537/33364
https://repositorio.upn.edu.pe/handle/11537/33366
https://repositorio.upn.edu.pe/handle/11537/33367
https://repositorio.upn.edu.pe/handle/11537/33368
https://repositorio.upn.edu.pe/handle/11537/33370
https://repositorio.upn.edu.pe/handle/11537/33369
https://repositorio.upn.edu.pe/handle/11537/33372
https://repositorio.upn.edu.pe/handle/11537/33374
https://repositorio.upn.edu.pe/handle/11537/33373
https://repositorio.upn.edu.pe/handle/11537/33355
https://repositorio.upn.edu.pe/handle/11537/33358
https://repositorio.upn.edu.pe/handle/11537/33371
https://repositorio.upn.edu.pe/handle/11537/33357
https://repositorio.upn.edu.pe/handle/11537/33365
https://repositorio.upn.edu.pe/handle/11537/33375
https://repositorio.upn.edu.pe/handle/11537/33376
https://repositorio.upn.edu.pe/handle/11537/33379
https://repositorio.upn.edu.pe/handle/11537/33378
https://repositorio.upn.edu.pe/handle/11537/33380
https://repositorio.upn.edu.pe/handle/11537/33382
https://repositorio.upn.edu.pe/handle/11537/33386
https://repositorio.upn.edu.pe/handle/11537/33388
https://repositorio.upn.edu.pe/handle/11537/33389
https://repositorio.upn.edu.pe/handle/11537/33390
https://repositorio.upn.edu.pe/handle/11537/33391
https://repositorio.upn.edu.pe/handle/11537/33392
https://repositorio.upn.edu.pe/handle/11537/33393
https://repositorio.upn.edu.pe/handle/11537/33394
https://repositorio.upn.edu.pe/handle/11537/33395
https://repositorio.upn.edu.pe/handle/11537/33397
https://repositorio.upn.edu.pe/handle/11537/33396
https://repositorio.upn.edu.pe/handle/11537/33398
https://repositorio.upn.edu.pe/handle/11537/33377
https://repositorio.upn.edu.pe/handle/11537/33381
https://repositorio.upn.edu.pe/handle/11537/33384
https://repositorio.upn.edu.pe/handle/11537/33383
https://repositorio.upn.edu.pe/handle/11537/33385
https://repositorio.upn.edu.pe/handle/11537/33387
https://repositorio.upn.edu.pe/handle/11537/33403
https://repositorio.upn.edu.pe/handle/11537/33404
https://repositorio.upn.edu.pe/handle/11537/33405
https://repositorio.upn.edu.pe/handle/11537/33406
https://repositorio.upn.edu.pe/handle/11537/33407
https://repositorio.upn.edu.pe/handle/11537/33410
https://repositorio.upn.edu.pe/handle/11537/33411
https://repositorio.upn.edu.pe/handle/11537/33412
https://repositorio.upn.edu.pe/handle/11537/33413
https://repositorio.upn.edu.pe/handle/11537/33414
https://repositorio.upn.edu.pe/handle/11537/33417
https://repositorio.upn.edu.pe/handle/11537/33418
https://repositorio.upn.edu.pe/handle/11537/33419
https://repositorio.upn.edu.pe/handle/11537/33408
https://repositorio.upn.edu.pe/handle/11537/33415
https://repositorio.upn.edu.pe/handle/11537/33416
https://repositorio.upn.edu.pe/handle/11537/33399
https://repositorio.upn.edu.pe/handle/11537/33401
https://repositorio.upn.edu.pe/handle/11537/33400
https://repositorio.upn.edu.pe/handle/11537/33402
https://repositorio.upn.edu.pe/handle/11537/33409
https://repositorio.upn.edu.pe/handle/11537/33421
https://repositorio.upn.edu.pe/handle/11537/33422
https://repositorio.upn.edu.pe/handle/11537/33423
https://repositorio.upn.edu.pe/handle/11537/33425
https://repositorio.upn.edu.pe/handle/11537/33424
https://repositorio.upn.edu.pe/handle/11537/33427
https://repositorio.upn.edu.pe/handle/11537/33430
https://repositorio.upn.edu.pe/handle/11537/33429
https://repositorio.upn.edu.pe/handle/11537/33431
https://repositorio.upn.edu.pe/handle/11537/33433
https://repositorio.upn.edu.pe/handle/11537/33434
https://repositorio.upn.edu.pe/handle/11537/33436
https://repositorio.upn.edu.pe/handle/11537/33435
https://repositorio.upn.edu.pe/handle/11537/33420
https://repositorio.upn.edu.pe/handle/11537/33426
https://repositorio.upn.edu.pe/handle/11537/33428
https://repositorio.upn.edu.pe/handle/11537/33432
https://repositorio.upn.edu.pe/handle/11537/33437
https://repositorio.upn.edu.pe/handle/11537/33440
https://repositorio.upn.edu.pe/handle/11537/33441
https://repositorio.upn.edu.pe/handle/11537/33443
https://repositorio.upn.edu.pe/handle/11537/33444
https://repositorio.upn.edu.pe/handle/11537/33446
https://repositorio.upn.edu.pe/handle/11537/33447
https://repositorio.upn.edu.pe/handle/11537/33448
https://repositorio.upn.edu.pe/handle/11537/33449
https://repositorio.upn.edu.pe/handle/11537/33450
https://repositorio.upn.edu.pe/handle/11537/33451
https://repositorio.upn.edu.pe/handle/11537/33453
https://repositorio.upn.edu.pe/handle/11537/33454
https://repositorio.upn.edu.pe/handle/11537/33438
https://repositorio.upn.edu.pe/handle/11537/33439
https://repositorio.upn.edu.pe/handle/11537/33442
https://repositorio.upn.edu.pe/handle/11537/33445
https://repositorio.upn.edu.pe/handle/11537/33452
https://repositorio.upn.edu.pe/handle/11537/33455
https://repositorio.upn.edu.pe/handle/11537/33457
https://repositorio.upn.edu.pe/handle/11537/33468
https://repositorio.upn.edu.pe/handle/11537/33469
https://repositorio.upn.edu.pe/handle/11537/33470
https://repositorio.upn.edu.pe/handle/11537/33456
https://repositorio.upn.edu.pe/handle/11537/33458
https://repositorio.upn.edu.pe/handle/11537/33460
https://repositorio.upn.edu.pe/handle/11537/33459
https://repositorio.upn.edu.pe/handle/11537/33461
https://repositorio.upn.edu.pe/handle/11537/33462
https://repositorio.upn.edu.pe/handle/11537/33463
https://repositorio.upn.edu.pe/handle/11537/33465
https://repositorio.upn.edu.pe/handle/11537/33467
https://repositorio.upn.edu.pe/handle/11537/33480
https://repositorio.upn.edu.pe/handle/11537/33471
https://repositorio.upn.edu.pe/handle/11537/33472
https://repositorio.upn.edu.pe/handle/11537/33474
https://repositorio.upn.edu.pe/handle/11537/33475
https://repositorio.upn.edu.pe/handle/11537/33477
https://repositorio.upn.edu.pe/handle/11537/33478
https://repositorio.upn.edu.pe/handle/11537/33483
https://repositorio.upn.edu.pe/handle/11537/33482
https://repositorio.upn.edu.pe/handle/11537/33484
https://repositorio.upn.edu.pe/handle/11537/33486
https://repositorio.upn.edu.pe/handle/11537/33487
https://repositorio.upn.edu.pe/handle/11537/33488
https://repositorio.upn.edu.pe/handle/11537/33489
https://repositorio.upn.edu.pe/handle/11537/33491
https://repositorio.upn.edu.pe/handle/11537/33490
https://repositorio.upn.edu.pe/handle/11537/33492
https://repositorio.upn.edu.pe/handle/11537/33493
https://repositorio.upn.edu.pe/handle/11537/33494
https://repositorio.upn.edu.pe/handle/11537/33473
https://repositorio.upn.edu.pe/handle/11537/33481
https://repositorio.upn.edu.pe/handle/11537/33495
https://repositorio.upn.edu.pe/handle/11537/33466
https://repositorio.upn.edu.pe/handle/11537/33479
https://repositorio.upn.edu.pe/handle/11537/33496
https://repositorio.upn.edu.pe/handle/11537/33497
https://repositorio.upn.edu.pe/handle/11537/33498
https://repositorio.upn.edu.pe/handle/11537/33499
https://repositorio.upn.edu.pe/handle/11537/33500
https://repositorio.upn.edu.pe/handle/11537/33501
https://repositorio.upn.edu.pe/handle/11537/33503
https://repositorio.upn.edu.pe/handle/11537/33502
https://repositorio.upn.edu.pe/handle/11537/33504
https://repositorio.upn.edu.pe/handle/11537/33476
https://repositorio.upn.edu.pe/handle/11537/33485
https://repositorio.upn.edu.pe/handle/11537/33505
https://repositorio.upn.edu.pe/handle/11537/33508
https://repositorio.upn.edu.pe/handle/11537/33509
https://repositorio.upn.edu.pe/handle/11537/33506
https://repositorio.upn.edu.pe/handle/11537/33507
https://repositorio.upn.edu.pe/handle/11537/33517
https://repositorio.upn.edu.pe/handle/11537/33518
https://repositorio.upn.edu.pe/handle/11537/33519
https://repositorio.upn.edu.pe/handle/11537/33510
https://repositorio.upn.edu.pe/handle/11537/33511
https://repositorio.upn.edu.pe/handle/11537/33512
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https://repositorio.upn.edu.pe/handle/11537/33577
https://repositorio.upn.edu.pe/handle/11537/33520
https://repositorio.upn.edu.pe/handle/11537/33521
https://repositorio.upn.edu.pe/handle/11537/33522
https://repositorio.upn.edu.pe/handle/11537/33523
https://repositorio.upn.edu.pe/handle/11537/33524
https://repositorio.upn.edu.pe/handle/11537/33525
https://repositorio.upn.edu.pe/handle/11537/33527
https://repositorio.upn.edu.pe/handle/11537/33515
https://repositorio.upn.edu.pe/handle/11537/33526
https://repositorio.upn.edu.pe/handle/11537/33536
https://repositorio.upn.edu.pe/handle/11537/33537
https://repositorio.upn.edu.pe/handle/11537/33529
https://repositorio.upn.edu.pe/handle/11537/33528
https://repositorio.upn.edu.pe/handle/11537/33530
https://repositorio.upn.edu.pe/handle/11537/33533
https://repositorio.upn.edu.pe/handle/11537/33534
https://repositorio.upn.edu.pe/handle/11537/33535
https://repositorio.upn.edu.pe/handle/11537/33539
https://repositorio.upn.edu.pe/handle/11537/33541
https://repositorio.upn.edu.pe/handle/11537/33540
https://repositorio.upn.edu.pe/handle/11537/33531
https://repositorio.upn.edu.pe/handle/11537/33532
https://repositorio.upn.edu.pe/handle/11537/33538
https://repositorio.upn.edu.pe/handle/11537/33544
https://repositorio.upn.edu.pe/handle/11537/33545
https://repositorio.upn.edu.pe/handle/11537/33542
https://repositorio.upn.edu.pe/handle/11537/33546
https://repositorio.upn.edu.pe/handle/11537/33547
https://repositorio.upn.edu.pe/handle/11537/33548
https://repositorio.upn.edu.pe/handle/11537/33550
https://repositorio.upn.edu.pe/handle/11537/33552
https://repositorio.upn.edu.pe/handle/11537/33551
https://repositorio.upn.edu.pe/handle/11537/33553