http://addi.ehu.es/handle/10810/59178
http://addi.ehu.es/handle/10810/61478
http://addi.ehu.es/handle/10810/58065
http://addi.ehu.es/handle/10810/64961
http://addi.ehu.es/handle/10810/62488
http://addi.ehu.es/handle/10810/64203
http://addi.ehu.es/handle/10810/63125
http://addi.ehu.es/handle/10810/61842
http://addi.ehu.es/handle/10810/66730
http://addi.ehu.es/handle/10810/59355
http://addi.ehu.es/handle/10810/59123
http://addi.ehu.es/handle/10810/65091
http://addi.ehu.es/handle/10810/60720
http://addi.ehu.es/handle/10810/60498
http://addi.ehu.es/handle/10810/61771
http://addi.ehu.es/handle/10810/60518
http://addi.ehu.es/handle/10810/60120
http://addi.ehu.es/handle/10810/58622
http://addi.ehu.es/handle/10810/61833
http://addi.ehu.es/handle/10810/60797
http://addi.ehu.es/handle/10810/59810
http://addi.ehu.es/handle/10810/61382
http://addi.ehu.es/handle/10810/63717
http://addi.ehu.es/handle/10810/65069
http://addi.ehu.es/handle/10810/64959
http://addi.ehu.es/handle/10810/60895
http://addi.ehu.es/handle/10810/65193
http://addi.ehu.es/handle/10810/63432
http://addi.ehu.es/handle/10810/62593
http://addi.ehu.es/handle/10810/59474
http://addi.ehu.es/handle/10810/65067
http://addi.ehu.es/handle/10810/65613
http://addi.ehu.es/handle/10810/61755
http://addi.ehu.es/handle/10810/60197
http://addi.ehu.es/handle/10810/57664
http://addi.ehu.es/handle/10810/60478
http://addi.ehu.es/handle/10810/61119
http://addi.ehu.es/handle/10810/57873
http://addi.ehu.es/handle/10810/61760
http://addi.ehu.es/handle/10810/65858
http://addi.ehu.es/handle/10810/66212
http://addi.ehu.es/handle/10810/59461
http://addi.ehu.es/handle/10810/63070
http://addi.ehu.es/handle/10810/57244
http://addi.ehu.es/handle/10810/65923
http://addi.ehu.es/handle/10810/65289
http://addi.ehu.es/handle/10810/58036
http://addi.ehu.es/handle/10810/65081
http://addi.ehu.es/handle/10810/61072
http://addi.ehu.es/handle/10810/57446
http://addi.ehu.es/handle/10810/57570
http://addi.ehu.es/handle/10810/60000
http://addi.ehu.es/handle/10810/66166
http://addi.ehu.es/handle/10810/58196
http://addi.ehu.es/handle/10810/64295
http://addi.ehu.es/handle/10810/66453
http://addi.ehu.es/handle/10810/60671
http://addi.ehu.es/handle/10810/64435
http://addi.ehu.es/handle/10810/65339
http://addi.ehu.es/handle/10810/59100
http://addi.ehu.es/handle/10810/58088
http://addi.ehu.es/handle/10810/58575
http://addi.ehu.es/handle/10810/59535
http://addi.ehu.es/handle/10810/61326
http://addi.ehu.es/handle/10810/63463
http://addi.ehu.es/handle/10810/65004
http://addi.ehu.es/handle/10810/64009
http://addi.ehu.es/handle/10810/62721
http://addi.ehu.es/handle/10810/58360
http://addi.ehu.es/handle/10810/57668
http://addi.ehu.es/handle/10810/59523
http://addi.ehu.es/handle/10810/59293
http://addi.ehu.es/handle/10810/58122
http://addi.ehu.es/handle/10810/61568
http://addi.ehu.es/handle/10810/60801
http://addi.ehu.es/handle/10810/57204
http://addi.ehu.es/handle/10810/57549
http://addi.ehu.es/handle/10810/64076
http://addi.ehu.es/handle/10810/65104
http://addi.ehu.es/handle/10810/63552
http://addi.ehu.es/handle/10810/62449
http://addi.ehu.es/handle/10810/60296
http://addi.ehu.es/handle/10810/66745
http://addi.ehu.es/handle/10810/60291
http://addi.ehu.es/handle/10810/66132
http://addi.ehu.es/handle/10810/63575
http://addi.ehu.es/handle/10810/64861
http://addi.ehu.es/handle/10810/57622
http://addi.ehu.es/handle/10810/64820
http://addi.ehu.es/handle/10810/65643
http://addi.ehu.es/handle/10810/62534
http://addi.ehu.es/handle/10810/66420
http://addi.ehu.es/handle/10810/65781
http://addi.ehu.es/handle/10810/64663
http://addi.ehu.es/handle/10810/64571
http://addi.ehu.es/handle/10810/63646
http://addi.ehu.es/handle/10810/63255
http://addi.ehu.es/handle/10810/64199
http://addi.ehu.es/handle/10810/57606
http://addi.ehu.es/handle/10810/57000
http://addi.ehu.es/handle/10810/63065
http://addi.ehu.es/handle/10810/64623
http://addi.ehu.es/handle/10810/59635
http://addi.ehu.es/handle/10810/65977
http://addi.ehu.es/handle/10810/59777
http://addi.ehu.es/handle/10810/66070
http://addi.ehu.es/handle/10810/61649
http://addi.ehu.es/handle/10810/63199
http://addi.ehu.es/handle/10810/64624
http://addi.ehu.es/handle/10810/66239
http://addi.ehu.es/handle/10810/63300
http://addi.ehu.es/handle/10810/64839
http://addi.ehu.es/handle/10810/59084
http://addi.ehu.es/handle/10810/61541
http://addi.ehu.es/handle/10810/66783
http://addi.ehu.es/handle/10810/63900
http://addi.ehu.es/handle/10810/64874
http://addi.ehu.es/handle/10810/66394
http://addi.ehu.es/handle/10810/58957
http://addi.ehu.es/handle/10810/62633
http://addi.ehu.es/handle/10810/61783
http://addi.ehu.es/handle/10810/63122
http://addi.ehu.es/handle/10810/57286
http://addi.ehu.es/handle/10810/63073
http://addi.ehu.es/handle/10810/64896
http://addi.ehu.es/handle/10810/59531
http://addi.ehu.es/handle/10810/59245
http://addi.ehu.es/handle/10810/65423
http://addi.ehu.es/handle/10810/63651
http://addi.ehu.es/handle/10810/62537
http://addi.ehu.es/handle/10810/66062
http://addi.ehu.es/handle/10810/57002
http://addi.ehu.es/handle/10810/59223
http://addi.ehu.es/handle/10810/65220
http://addi.ehu.es/handle/10810/62102
http://addi.ehu.es/handle/10810/63265
http://addi.ehu.es/handle/10810/66767
http://addi.ehu.es/handle/10810/61802
http://addi.ehu.es/handle/10810/65631
http://addi.ehu.es/handle/10810/61707
http://addi.ehu.es/handle/10810/57580
http://addi.ehu.es/handle/10810/60787
http://addi.ehu.es/handle/10810/63963
http://addi.ehu.es/handle/10810/58502
http://addi.ehu.es/handle/10810/65443
http://addi.ehu.es/handle/10810/57858
http://addi.ehu.es/handle/10810/61532
http://addi.ehu.es/handle/10810/60847
http://addi.ehu.es/handle/10810/63859
http://addi.ehu.es/handle/10810/58380
http://addi.ehu.es/handle/10810/60782
http://addi.ehu.es/handle/10810/65240
http://addi.ehu.es/handle/10810/65843
http://addi.ehu.es/handle/10810/59486
http://addi.ehu.es/handle/10810/65258
http://addi.ehu.es/handle/10810/57925
http://addi.ehu.es/handle/10810/63212
http://addi.ehu.es/handle/10810/59064
http://addi.ehu.es/handle/10810/59670
http://addi.ehu.es/handle/10810/63128
http://addi.ehu.es/handle/10810/62819
http://addi.ehu.es/handle/10810/65668
http://addi.ehu.es/handle/10810/59604
http://addi.ehu.es/handle/10810/63535
http://addi.ehu.es/handle/10810/60165
http://addi.ehu.es/handle/10810/61228
http://addi.ehu.es/handle/10810/64131
http://addi.ehu.es/handle/10810/58092
http://addi.ehu.es/handle/10810/60161
http://addi.ehu.es/handle/10810/60806
http://addi.ehu.es/handle/10810/62407
http://addi.ehu.es/handle/10810/63105
http://addi.ehu.es/handle/10810/65416
http://addi.ehu.es/handle/10810/64825
http://addi.ehu.es/handle/10810/61259
http://addi.ehu.es/handle/10810/66557
http://addi.ehu.es/handle/10810/66766
http://addi.ehu.es/handle/10810/59243
http://addi.ehu.es/handle/10810/66141
http://addi.ehu.es/handle/10810/58491
http://addi.ehu.es/handle/10810/64399
http://addi.ehu.es/handle/10810/64807
http://addi.ehu.es/handle/10810/62528
http://addi.ehu.es/handle/10810/61522
http://addi.ehu.es/handle/10810/64830
http://addi.ehu.es/handle/10810/64693
http://addi.ehu.es/handle/10810/63642
http://addi.ehu.es/handle/10810/66679
http://addi.ehu.es/handle/10810/59619
http://addi.ehu.es/handle/10810/56982
http://addi.ehu.es/handle/10810/63453
http://addi.ehu.es/handle/10810/64087
http://addi.ehu.es/handle/10810/63464
http://addi.ehu.es/handle/10810/59922
http://addi.ehu.es/handle/10810/59605
http://addi.ehu.es/handle/10810/65890
http://addi.ehu.es/handle/10810/60295
http://addi.ehu.es/handle/10810/58313
http://addi.ehu.es/handle/10810/60971
http://addi.ehu.es/handle/10810/65886
http://addi.ehu.es/handle/10810/57705
http://addi.ehu.es/handle/10810/60205
http://addi.ehu.es/handle/10810/65464
http://addi.ehu.es/handle/10810/64868
http://addi.ehu.es/handle/10810/57128
http://addi.ehu.es/handle/10810/66302
http://addi.ehu.es/handle/10810/65432
http://addi.ehu.es/handle/10810/66031
http://addi.ehu.es/handle/10810/64905
http://addi.ehu.es/handle/10810/64691
http://addi.ehu.es/handle/10810/60169
http://addi.ehu.es/handle/10810/65818
http://addi.ehu.es/handle/10810/57112
http://addi.ehu.es/handle/10810/62671
http://addi.ehu.es/handle/10810/63682
http://addi.ehu.es/handle/10810/65347
http://addi.ehu.es/handle/10810/65149
http://addi.ehu.es/handle/10810/65413
http://addi.ehu.es/handle/10810/66168
http://addi.ehu.es/handle/10810/58522
http://addi.ehu.es/handle/10810/59114
http://addi.ehu.es/handle/10810/63451
http://addi.ehu.es/handle/10810/59470
http://addi.ehu.es/handle/10810/57792
http://addi.ehu.es/handle/10810/58958
http://addi.ehu.es/handle/10810/61562
http://addi.ehu.es/handle/10810/61884
http://addi.ehu.es/handle/10810/60564
http://addi.ehu.es/handle/10810/59279
http://addi.ehu.es/handle/10810/63936
http://addi.ehu.es/handle/10810/64740
http://addi.ehu.es/handle/10810/63507
http://addi.ehu.es/handle/10810/60047
http://addi.ehu.es/handle/10810/57510
http://addi.ehu.es/handle/10810/62850
http://addi.ehu.es/handle/10810/64669
http://addi.ehu.es/handle/10810/63107
http://addi.ehu.es/handle/10810/59902
http://addi.ehu.es/handle/10810/66576
http://addi.ehu.es/handle/10810/58340
http://addi.ehu.es/handle/10810/57557
http://addi.ehu.es/handle/10810/57896
http://addi.ehu.es/handle/10810/66553
http://addi.ehu.es/handle/10810/65880
http://addi.ehu.es/handle/10810/62516
http://addi.ehu.es/handle/10810/58644
http://addi.ehu.es/handle/10810/58425
http://addi.ehu.es/handle/10810/60817
http://addi.ehu.es/handle/10810/58912
http://addi.ehu.es/handle/10810/59205
http://addi.ehu.es/handle/10810/61592
http://addi.ehu.es/handle/10810/61305
http://addi.ehu.es/handle/10810/61129
http://addi.ehu.es/handle/10810/59471
http://addi.ehu.es/handle/10810/63677
http://addi.ehu.es/handle/10810/57036
http://addi.ehu.es/handle/10810/60886
http://addi.ehu.es/handle/10810/64814
http://addi.ehu.es/handle/10810/64103
http://addi.ehu.es/handle/10810/60229
http://addi.ehu.es/handle/10810/63019
http://addi.ehu.es/handle/10810/61419
http://addi.ehu.es/handle/10810/60444
http://addi.ehu.es/handle/10810/63363
http://addi.ehu.es/handle/10810/59144
http://addi.ehu.es/handle/10810/57141
http://addi.ehu.es/handle/10810/61199
http://addi.ehu.es/handle/10810/63093
http://addi.ehu.es/handle/10810/62641
http://addi.ehu.es/handle/10810/65313
http://addi.ehu.es/handle/10810/63703
http://addi.ehu.es/handle/10810/59049
http://addi.ehu.es/handle/10810/60871
http://addi.ehu.es/handle/10810/60766
http://addi.ehu.es/handle/10810/61477
http://addi.ehu.es/handle/10810/60731
http://addi.ehu.es/handle/10810/64637
http://addi.ehu.es/handle/10810/57631
http://addi.ehu.es/handle/10810/61484
http://addi.ehu.es/handle/10810/57655
http://addi.ehu.es/handle/10810/65931
http://addi.ehu.es/handle/10810/65949
http://addi.ehu.es/handle/10810/61041
http://addi.ehu.es/handle/10810/65380
http://addi.ehu.es/handle/10810/61917
http://addi.ehu.es/handle/10810/63815
http://addi.ehu.es/handle/10810/57578
http://addi.ehu.es/handle/10810/62356
http://addi.ehu.es/handle/10810/65836
http://addi.ehu.es/handle/10810/60471
http://addi.ehu.es/handle/10810/63194
http://addi.ehu.es/handle/10810/60770
http://addi.ehu.es/handle/10810/58126
http://addi.ehu.es/handle/10810/65172
http://addi.ehu.es/handle/10810/65206
http://addi.ehu.es/handle/10810/63563
http://addi.ehu.es/handle/10810/59906
http://addi.ehu.es/handle/10810/58888
http://addi.ehu.es/handle/10810/57340
http://addi.ehu.es/handle/10810/63174
http://addi.ehu.es/handle/10810/62453
http://addi.ehu.es/handle/10810/60014
http://addi.ehu.es/handle/10810/65702
http://addi.ehu.es/handle/10810/59019
http://addi.ehu.es/handle/10810/60959
http://addi.ehu.es/handle/10810/61064
http://addi.ehu.es/handle/10810/58849
http://addi.ehu.es/handle/10810/60537
http://addi.ehu.es/handle/10810/57646
http://addi.ehu.es/handle/10810/66401
http://addi.ehu.es/handle/10810/61853
http://addi.ehu.es/handle/10810/59448
http://addi.ehu.es/handle/10810/65485
http://addi.ehu.es/handle/10810/60476
http://addi.ehu.es/handle/10810/57402
http://addi.ehu.es/handle/10810/65984
http://addi.ehu.es/handle/10810/57003
http://addi.ehu.es/handle/10810/66744
http://addi.ehu.es/handle/10810/59994
http://addi.ehu.es/handle/10810/65369
http://addi.ehu.es/handle/10810/58327
http://addi.ehu.es/handle/10810/61556
http://addi.ehu.es/handle/10810/61499
http://addi.ehu.es/handle/10810/58040
http://addi.ehu.es/handle/10810/66029
http://addi.ehu.es/handle/10810/62674
http://addi.ehu.es/handle/10810/62734
http://addi.ehu.es/handle/10810/63442
http://addi.ehu.es/handle/10810/64311
http://addi.ehu.es/handle/10810/57716
http://addi.ehu.es/handle/10810/61172
http://addi.ehu.es/handle/10810/62677
http://addi.ehu.es/handle/10810/59093
http://addi.ehu.es/handle/10810/62151
http://addi.ehu.es/handle/10810/65447
http://addi.ehu.es/handle/10810/61220
http://addi.ehu.es/handle/10810/64729
http://addi.ehu.es/handle/10810/57418
http://addi.ehu.es/handle/10810/65689
http://addi.ehu.es/handle/10810/60889
http://addi.ehu.es/handle/10810/66664
http://addi.ehu.es/handle/10810/60160
http://addi.ehu.es/handle/10810/65052
http://addi.ehu.es/handle/10810/61493
http://addi.ehu.es/handle/10810/62943
http://addi.ehu.es/handle/10810/65399
http://addi.ehu.es/handle/10810/58624
http://addi.ehu.es/handle/10810/59330
http://addi.ehu.es/handle/10810/59353
http://addi.ehu.es/handle/10810/60593
http://addi.ehu.es/handle/10810/65218
http://addi.ehu.es/handle/10810/57839
http://addi.ehu.es/handle/10810/65823
http://addi.ehu.es/handle/10810/58130
http://addi.ehu.es/handle/10810/66642
http://addi.ehu.es/handle/10810/59666
http://addi.ehu.es/handle/10810/57955
http://addi.ehu.es/handle/10810/64214
http://addi.ehu.es/handle/10810/63852
http://addi.ehu.es/handle/10810/66720
http://addi.ehu.es/handle/10810/62725
http://addi.ehu.es/handle/10810/65294
http://addi.ehu.es/handle/10810/63365
http://addi.ehu.es/handle/10810/64642
http://addi.ehu.es/handle/10810/60616
http://addi.ehu.es/handle/10810/57726
http://addi.ehu.es/handle/10810/60298
http://addi.ehu.es/handle/10810/63480
http://addi.ehu.es/handle/10810/65241
http://addi.ehu.es/handle/10810/65113
http://addi.ehu.es/handle/10810/58901
http://addi.ehu.es/handle/10810/61080
http://addi.ehu.es/handle/10810/58770
http://addi.ehu.es/handle/10810/62683
http://addi.ehu.es/handle/10810/63612
http://addi.ehu.es/handle/10810/59725
http://addi.ehu.es/handle/10810/65159
http://addi.ehu.es/handle/10810/61588
http://addi.ehu.es/handle/10810/65287
http://addi.ehu.es/handle/10810/58157
http://addi.ehu.es/handle/10810/57748
http://addi.ehu.es/handle/10810/60118
http://addi.ehu.es/handle/10810/66482
http://addi.ehu.es/handle/10810/61543
http://addi.ehu.es/handle/10810/61394
http://addi.ehu.es/handle/10810/60435
http://addi.ehu.es/handle/10810/66458
http://addi.ehu.es/handle/10810/59107
http://addi.ehu.es/handle/10810/66252
http://addi.ehu.es/handle/10810/59766
http://addi.ehu.es/handle/10810/66434
http://addi.ehu.es/handle/10810/60195
http://addi.ehu.es/handle/10810/60998
http://addi.ehu.es/handle/10810/64433
http://addi.ehu.es/handle/10810/58437
http://addi.ehu.es/handle/10810/61154
http://addi.ehu.es/handle/10810/60374
http://addi.ehu.es/handle/10810/61552
http://addi.ehu.es/handle/10810/66484
http://addi.ehu.es/handle/10810/62814
http://addi.ehu.es/handle/10810/61054
http://addi.ehu.es/handle/10810/61379
http://addi.ehu.es/handle/10810/60582
http://addi.ehu.es/handle/10810/63640
http://addi.ehu.es/handle/10810/61609
http://addi.ehu.es/handle/10810/64377
http://addi.ehu.es/handle/10810/66365
http://addi.ehu.es/handle/10810/57678
http://addi.ehu.es/handle/10810/65516
http://addi.ehu.es/handle/10810/59579
http://addi.ehu.es/handle/10810/62405
http://addi.ehu.es/handle/10810/59022
http://addi.ehu.es/handle/10810/58483
http://addi.ehu.es/handle/10810/66472
http://addi.ehu.es/handle/10810/57330
http://addi.ehu.es/handle/10810/64267
http://addi.ehu.es/handle/10810/66498
http://addi.ehu.es/handle/10810/62981
http://addi.ehu.es/handle/10810/62469
http://addi.ehu.es/handle/10810/60163
http://addi.ehu.es/handle/10810/57350
http://addi.ehu.es/handle/10810/61198
http://addi.ehu.es/handle/10810/61923
http://addi.ehu.es/handle/10810/66357
http://addi.ehu.es/handle/10810/62708
http://addi.ehu.es/handle/10810/66609
http://addi.ehu.es/handle/10810/58235
http://addi.ehu.es/handle/10810/65908
http://addi.ehu.es/handle/10810/66192
http://addi.ehu.es/handle/10810/66003
http://addi.ehu.es/handle/10810/63550
http://addi.ehu.es/handle/10810/57029
http://addi.ehu.es/handle/10810/66142
http://addi.ehu.es/handle/10810/64595
http://addi.ehu.es/handle/10810/60429
http://addi.ehu.es/handle/10810/66690
http://addi.ehu.es/handle/10810/64915
http://addi.ehu.es/handle/10810/60020
http://addi.ehu.es/handle/10810/58316
http://addi.ehu.es/handle/10810/59358
http://addi.ehu.es/handle/10810/61082
http://addi.ehu.es/handle/10810/60140
http://addi.ehu.es/handle/10810/64625
http://addi.ehu.es/handle/10810/58646
http://addi.ehu.es/handle/10810/57720
http://addi.ehu.es/handle/10810/66122
http://addi.ehu.es/handle/10810/62422
http://addi.ehu.es/handle/10810/63574
http://addi.ehu.es/handle/10810/65620
http://addi.ehu.es/handle/10810/60697
http://addi.ehu.es/handle/10810/62566
http://addi.ehu.es/handle/10810/65195
http://addi.ehu.es/handle/10810/59662
http://addi.ehu.es/handle/10810/65719
http://addi.ehu.es/handle/10810/57246
http://addi.ehu.es/handle/10810/59182
http://addi.ehu.es/handle/10810/57799
http://addi.ehu.es/handle/10810/58578
http://addi.ehu.es/handle/10810/57113
http://addi.ehu.es/handle/10810/59053
http://addi.ehu.es/handle/10810/59009
http://addi.ehu.es/handle/10810/58320
http://addi.ehu.es/handle/10810/63115
http://addi.ehu.es/handle/10810/63840
http://addi.ehu.es/handle/10810/56987
http://addi.ehu.es/handle/10810/66351
http://addi.ehu.es/handle/10810/65857
http://addi.ehu.es/handle/10810/58980
http://addi.ehu.es/handle/10810/57023
http://addi.ehu.es/handle/10810/58274
http://addi.ehu.es/handle/10810/58738
http://addi.ehu.es/handle/10810/57214
http://addi.ehu.es/handle/10810/65909
http://addi.ehu.es/handle/10810/63937
http://addi.ehu.es/handle/10810/66424
http://addi.ehu.es/handle/10810/57339
http://addi.ehu.es/handle/10810/63764
http://addi.ehu.es/handle/10810/66371
http://addi.ehu.es/handle/10810/60864
http://addi.ehu.es/handle/10810/63767
http://addi.ehu.es/handle/10810/58718
http://addi.ehu.es/handle/10810/65476
http://addi.ehu.es/handle/10810/63603
http://addi.ehu.es/handle/10810/59988
http://addi.ehu.es/handle/10810/62391
http://addi.ehu.es/handle/10810/57405
http://addi.ehu.es/handle/10810/65746
http://addi.ehu.es/handle/10810/63245
http://addi.ehu.es/handle/10810/65351
http://addi.ehu.es/handle/10810/59450
http://addi.ehu.es/handle/10810/63370
http://addi.ehu.es/handle/10810/58075
http://addi.ehu.es/handle/10810/59511
http://addi.ehu.es/handle/10810/58417
http://addi.ehu.es/handle/10810/61389
http://addi.ehu.es/handle/10810/63437
http://addi.ehu.es/handle/10810/60365
http://addi.ehu.es/handle/10810/64974
http://addi.ehu.es/handle/10810/61423
http://addi.ehu.es/handle/10810/60742
http://addi.ehu.es/handle/10810/58939
http://addi.ehu.es/handle/10810/66444
http://addi.ehu.es/handle/10810/58430
http://addi.ehu.es/handle/10810/62611
http://addi.ehu.es/handle/10810/62443
http://addi.ehu.es/handle/10810/60172
http://addi.ehu.es/handle/10810/58310
http://addi.ehu.es/handle/10810/60701
http://addi.ehu.es/handle/10810/57940
http://addi.ehu.es/handle/10810/62607
http://addi.ehu.es/handle/10810/65712
http://addi.ehu.es/handle/10810/64480
http://addi.ehu.es/handle/10810/64883
http://addi.ehu.es/handle/10810/63830
http://addi.ehu.es/handle/10810/59793