http://addi.ehu.es/handle/10810/57812
http://addi.ehu.es/handle/10810/59736
http://addi.ehu.es/handle/10810/60494
http://addi.ehu.es/handle/10810/60629
http://addi.ehu.es/handle/10810/60230
http://addi.ehu.es/handle/10810/63132
http://addi.ehu.es/handle/10810/61021
http://addi.ehu.es/handle/10810/60812
http://addi.ehu.es/handle/10810/58348
http://addi.ehu.es/handle/10810/59809
http://addi.ehu.es/handle/10810/57007
http://addi.ehu.es/handle/10810/60944
http://addi.ehu.es/handle/10810/57401
http://addi.ehu.es/handle/10810/59453
http://addi.ehu.es/handle/10810/61176
http://addi.ehu.es/handle/10810/57291
http://addi.ehu.es/handle/10810/58297
http://addi.ehu.es/handle/10810/58802
http://addi.ehu.es/handle/10810/63035
http://addi.ehu.es/handle/10810/61807
http://addi.ehu.es/handle/10810/62465
http://addi.ehu.es/handle/10810/62254
http://addi.ehu.es/handle/10810/57119
http://addi.ehu.es/handle/10810/63180
http://addi.ehu.es/handle/10810/62210
http://addi.ehu.es/handle/10810/61878
http://addi.ehu.es/handle/10810/57038
http://addi.ehu.es/handle/10810/61117
http://addi.ehu.es/handle/10810/61600
http://addi.ehu.es/handle/10810/60827
http://addi.ehu.es/handle/10810/61368
http://addi.ehu.es/handle/10810/60791
http://addi.ehu.es/handle/10810/58953
http://addi.ehu.es/handle/10810/59774
http://addi.ehu.es/handle/10810/58739
http://addi.ehu.es/handle/10810/59367
http://addi.ehu.es/handle/10810/56965
http://addi.ehu.es/handle/10810/59033
http://addi.ehu.es/handle/10810/60504
http://addi.ehu.es/handle/10810/58105
http://addi.ehu.es/handle/10810/58156
http://addi.ehu.es/handle/10810/59155
http://addi.ehu.es/handle/10810/61602
http://addi.ehu.es/handle/10810/62569
http://addi.ehu.es/handle/10810/59132
http://addi.ehu.es/handle/10810/58368
http://addi.ehu.es/handle/10810/60976
http://addi.ehu.es/handle/10810/60711
http://addi.ehu.es/handle/10810/62594
http://addi.ehu.es/handle/10810/61891
http://addi.ehu.es/handle/10810/60347
http://addi.ehu.es/handle/10810/58753
http://addi.ehu.es/handle/10810/62690
http://addi.ehu.es/handle/10810/57174
http://addi.ehu.es/handle/10810/63165
http://addi.ehu.es/handle/10810/59373
http://addi.ehu.es/handle/10810/60461
http://addi.ehu.es/handle/10810/61604
http://addi.ehu.es/handle/10810/59588
http://addi.ehu.es/handle/10810/62581
http://addi.ehu.es/handle/10810/62238
http://addi.ehu.es/handle/10810/58879
http://addi.ehu.es/handle/10810/62579
http://addi.ehu.es/handle/10810/59034
http://addi.ehu.es/handle/10810/57589
http://addi.ehu.es/handle/10810/60153
http://addi.ehu.es/handle/10810/57099
http://addi.ehu.es/handle/10810/57777
http://addi.ehu.es/handle/10810/60392
http://addi.ehu.es/handle/10810/58207
http://addi.ehu.es/handle/10810/59900
http://addi.ehu.es/handle/10810/58431
http://addi.ehu.es/handle/10810/57377
http://addi.ehu.es/handle/10810/59485
http://addi.ehu.es/handle/10810/59655
http://addi.ehu.es/handle/10810/62514
http://addi.ehu.es/handle/10810/56925
http://addi.ehu.es/handle/10810/62439
http://addi.ehu.es/handle/10810/58395
http://addi.ehu.es/handle/10810/57154
http://addi.ehu.es/handle/10810/57031
http://addi.ehu.es/handle/10810/58325
http://addi.ehu.es/handle/10810/62474
http://addi.ehu.es/handle/10810/57529
http://addi.ehu.es/handle/10810/57565
http://addi.ehu.es/handle/10810/57241
http://addi.ehu.es/handle/10810/59363
http://addi.ehu.es/handle/10810/61458
http://addi.ehu.es/handle/10810/57903
http://addi.ehu.es/handle/10810/61473
http://addi.ehu.es/handle/10810/62214
http://addi.ehu.es/handle/10810/61070
http://addi.ehu.es/handle/10810/61719
http://addi.ehu.es/handle/10810/59271
http://addi.ehu.es/handle/10810/62201
http://addi.ehu.es/handle/10810/60805
http://addi.ehu.es/handle/10810/63045
http://addi.ehu.es/handle/10810/59059
http://addi.ehu.es/handle/10810/63137
http://addi.ehu.es/handle/10810/58641
http://addi.ehu.es/handle/10810/61401
http://addi.ehu.es/handle/10810/58707
http://addi.ehu.es/handle/10810/59681
http://addi.ehu.es/handle/10810/58878
http://addi.ehu.es/handle/10810/57495
http://addi.ehu.es/handle/10810/57725
http://addi.ehu.es/handle/10810/59508
http://addi.ehu.es/handle/10810/62617
http://addi.ehu.es/handle/10810/60136
http://addi.ehu.es/handle/10810/57005
http://addi.ehu.es/handle/10810/60470
http://addi.ehu.es/handle/10810/61086
http://addi.ehu.es/handle/10810/60025
http://addi.ehu.es/handle/10810/58176
http://addi.ehu.es/handle/10810/62845
http://addi.ehu.es/handle/10810/63066
http://addi.ehu.es/handle/10810/63037
http://addi.ehu.es/handle/10810/57444
http://addi.ehu.es/handle/10810/60596
http://addi.ehu.es/handle/10810/63168
http://addi.ehu.es/handle/10810/58435
http://addi.ehu.es/handle/10810/58414
http://addi.ehu.es/handle/10810/60334
http://addi.ehu.es/handle/10810/61927
http://addi.ehu.es/handle/10810/60632
http://addi.ehu.es/handle/10810/57276
http://addi.ehu.es/handle/10810/59071
http://addi.ehu.es/handle/10810/60754
http://addi.ehu.es/handle/10810/63287
http://addi.ehu.es/handle/10810/59935
http://addi.ehu.es/handle/10810/57063
http://addi.ehu.es/handle/10810/63032
http://addi.ehu.es/handle/10810/60978
http://addi.ehu.es/handle/10810/59756
http://addi.ehu.es/handle/10810/57419
http://addi.ehu.es/handle/10810/60867
http://addi.ehu.es/handle/10810/57653
http://addi.ehu.es/handle/10810/60033
http://addi.ehu.es/handle/10810/57413
http://addi.ehu.es/handle/10810/60123
http://addi.ehu.es/handle/10810/61820
http://addi.ehu.es/handle/10810/61293
http://addi.ehu.es/handle/10810/57738
http://addi.ehu.es/handle/10810/59068
http://addi.ehu.es/handle/10810/58928
http://addi.ehu.es/handle/10810/59177
http://addi.ehu.es/handle/10810/58427
http://addi.ehu.es/handle/10810/58898
http://addi.ehu.es/handle/10810/60059
http://addi.ehu.es/handle/10810/59051
http://addi.ehu.es/handle/10810/57109
http://addi.ehu.es/handle/10810/63118
http://addi.ehu.es/handle/10810/59979
http://addi.ehu.es/handle/10810/60512
http://addi.ehu.es/handle/10810/57250
http://addi.ehu.es/handle/10810/62296
http://addi.ehu.es/handle/10810/57264
http://addi.ehu.es/handle/10810/60032
http://addi.ehu.es/handle/10810/57541
http://addi.ehu.es/handle/10810/60539
http://addi.ehu.es/handle/10810/61536
http://addi.ehu.es/handle/10810/60100
http://addi.ehu.es/handle/10810/61726
http://addi.ehu.es/handle/10810/61924
http://addi.ehu.es/handle/10810/59980
http://addi.ehu.es/handle/10810/61782
http://addi.ehu.es/handle/10810/57035
http://addi.ehu.es/handle/10810/58142
http://addi.ehu.es/handle/10810/62247
http://addi.ehu.es/handle/10810/59424
http://addi.ehu.es/handle/10810/57438
http://addi.ehu.es/handle/10810/57755
http://addi.ehu.es/handle/10810/63033
http://addi.ehu.es/handle/10810/60294
http://addi.ehu.es/handle/10810/61751
http://addi.ehu.es/handle/10810/62373
http://addi.ehu.es/handle/10810/57114
http://addi.ehu.es/handle/10810/57280
http://addi.ehu.es/handle/10810/58895
http://addi.ehu.es/handle/10810/60769
http://addi.ehu.es/handle/10810/60816
http://addi.ehu.es/handle/10810/62246
http://addi.ehu.es/handle/10810/60261
http://addi.ehu.es/handle/10810/63239
http://addi.ehu.es/handle/10810/58531
http://addi.ehu.es/handle/10810/59780
http://addi.ehu.es/handle/10810/62844
http://addi.ehu.es/handle/10810/62585
http://addi.ehu.es/handle/10810/58908
http://addi.ehu.es/handle/10810/58989
http://addi.ehu.es/handle/10810/59392
http://addi.ehu.es/handle/10810/59204
http://addi.ehu.es/handle/10810/58253
http://addi.ehu.es/handle/10810/59220
http://addi.ehu.es/handle/10810/56962
http://addi.ehu.es/handle/10810/61933
http://addi.ehu.es/handle/10810/62765
http://addi.ehu.es/handle/10810/61803
http://addi.ehu.es/handle/10810/59657
http://addi.ehu.es/handle/10810/59529
http://addi.ehu.es/handle/10810/61840
http://addi.ehu.es/handle/10810/62287
http://addi.ehu.es/handle/10810/61288
http://addi.ehu.es/handle/10810/62430
http://addi.ehu.es/handle/10810/59391
http://addi.ehu.es/handle/10810/59247
http://addi.ehu.es/handle/10810/58512
http://addi.ehu.es/handle/10810/57449
http://addi.ehu.es/handle/10810/59097
http://addi.ehu.es/handle/10810/58250
http://addi.ehu.es/handle/10810/58743
http://addi.ehu.es/handle/10810/57134
http://addi.ehu.es/handle/10810/59018
http://addi.ehu.es/handle/10810/60269
http://addi.ehu.es/handle/10810/62507
http://addi.ehu.es/handle/10810/63172
http://addi.ehu.es/handle/10810/60266
http://addi.ehu.es/handle/10810/59265
http://addi.ehu.es/handle/10810/56928
http://addi.ehu.es/handle/10810/61036
http://addi.ehu.es/handle/10810/58212
http://addi.ehu.es/handle/10810/59438
http://addi.ehu.es/handle/10810/58927
http://addi.ehu.es/handle/10810/58452
http://addi.ehu.es/handle/10810/58058
http://addi.ehu.es/handle/10810/57219
http://addi.ehu.es/handle/10810/62088
http://addi.ehu.es/handle/10810/58699
http://addi.ehu.es/handle/10810/58341
http://addi.ehu.es/handle/10810/61397
http://addi.ehu.es/handle/10810/58924
http://addi.ehu.es/handle/10810/61859
http://addi.ehu.es/handle/10810/59578
http://addi.ehu.es/handle/10810/59056
http://addi.ehu.es/handle/10810/61299
http://addi.ehu.es/handle/10810/60380
http://addi.ehu.es/handle/10810/60969
http://addi.ehu.es/handle/10810/62288
http://addi.ehu.es/handle/10810/61811
http://addi.ehu.es/handle/10810/62252
http://addi.ehu.es/handle/10810/58677
http://addi.ehu.es/handle/10810/61497
http://addi.ehu.es/handle/10810/61007
http://addi.ehu.es/handle/10810/61223
http://addi.ehu.es/handle/10810/59342
http://addi.ehu.es/handle/10810/61915
http://addi.ehu.es/handle/10810/60743
http://addi.ehu.es/handle/10810/58470
http://addi.ehu.es/handle/10810/61270
http://addi.ehu.es/handle/10810/59991
http://addi.ehu.es/handle/10810/58634
http://addi.ehu.es/handle/10810/59310
http://addi.ehu.es/handle/10810/61373
http://addi.ehu.es/handle/10810/62501
http://addi.ehu.es/handle/10810/57423
http://addi.ehu.es/handle/10810/59637
http://addi.ehu.es/handle/10810/62126
http://addi.ehu.es/handle/10810/60981
http://addi.ehu.es/handle/10810/62964
http://addi.ehu.es/handle/10810/58606
http://addi.ehu.es/handle/10810/57054
http://addi.ehu.es/handle/10810/60784
http://addi.ehu.es/handle/10810/57298
http://addi.ehu.es/handle/10810/58125
http://addi.ehu.es/handle/10810/60892
http://addi.ehu.es/handle/10810/63074
http://addi.ehu.es/handle/10810/61502
http://addi.ehu.es/handle/10810/59208
http://addi.ehu.es/handle/10810/61286
http://addi.ehu.es/handle/10810/57802
http://addi.ehu.es/handle/10810/62490
http://addi.ehu.es/handle/10810/60013
http://addi.ehu.es/handle/10810/62801
http://addi.ehu.es/handle/10810/57320
http://addi.ehu.es/handle/10810/60048
http://addi.ehu.es/handle/10810/56931
http://addi.ehu.es/handle/10810/60920
http://addi.ehu.es/handle/10810/63182
http://addi.ehu.es/handle/10810/61130
http://addi.ehu.es/handle/10810/61932
http://addi.ehu.es/handle/10810/62081
http://addi.ehu.es/handle/10810/61435
http://addi.ehu.es/handle/10810/57642
http://addi.ehu.es/handle/10810/62874
http://addi.ehu.es/handle/10810/60319
http://addi.ehu.es/handle/10810/58942
http://addi.ehu.es/handle/10810/59479
http://addi.ehu.es/handle/10810/62592
http://addi.ehu.es/handle/10810/62267
http://addi.ehu.es/handle/10810/61386
http://addi.ehu.es/handle/10810/62378
http://addi.ehu.es/handle/10810/60028
http://addi.ehu.es/handle/10810/62613
http://addi.ehu.es/handle/10810/58598
http://addi.ehu.es/handle/10810/61267
http://addi.ehu.es/handle/10810/57111
http://addi.ehu.es/handle/10810/59328
http://addi.ehu.es/handle/10810/59514
http://addi.ehu.es/handle/10810/60460
http://addi.ehu.es/handle/10810/58406
http://addi.ehu.es/handle/10810/57215
http://addi.ehu.es/handle/10810/59755
http://addi.ehu.es/handle/10810/62239
http://addi.ehu.es/handle/10810/61231
http://addi.ehu.es/handle/10810/57097
http://addi.ehu.es/handle/10810/57396
http://addi.ehu.es/handle/10810/57742
http://addi.ehu.es/handle/10810/58337
http://addi.ehu.es/handle/10810/57098
http://addi.ehu.es/handle/10810/57165
http://addi.ehu.es/handle/10810/60575
http://addi.ehu.es/handle/10810/63098
http://addi.ehu.es/handle/10810/61235
http://addi.ehu.es/handle/10810/60841
http://addi.ehu.es/handle/10810/59230
http://addi.ehu.es/handle/10810/59763
http://addi.ehu.es/handle/10810/58393
http://addi.ehu.es/handle/10810/61385
http://addi.ehu.es/handle/10810/60925
http://addi.ehu.es/handle/10810/63258
http://addi.ehu.es/handle/10810/58241
http://addi.ehu.es/handle/10810/61418
http://addi.ehu.es/handle/10810/62369
http://addi.ehu.es/handle/10810/57957
http://addi.ehu.es/handle/10810/59530
http://addi.ehu.es/handle/10810/61844
http://addi.ehu.es/handle/10810/60897
http://addi.ehu.es/handle/10810/63220
http://addi.ehu.es/handle/10810/59113
http://addi.ehu.es/handle/10810/60018
http://addi.ehu.es/handle/10810/60083
http://addi.ehu.es/handle/10810/62145
http://addi.ehu.es/handle/10810/61906
http://addi.ehu.es/handle/10810/57422
http://addi.ehu.es/handle/10810/57546
http://addi.ehu.es/handle/10810/61479
http://addi.ehu.es/handle/10810/58283
http://addi.ehu.es/handle/10810/61678
http://addi.ehu.es/handle/10810/60318
http://addi.ehu.es/handle/10810/57872
http://addi.ehu.es/handle/10810/61088
http://addi.ehu.es/handle/10810/62141
http://addi.ehu.es/handle/10810/57718
http://addi.ehu.es/handle/10810/61845
http://addi.ehu.es/handle/10810/57568
http://addi.ehu.es/handle/10810/59231
http://addi.ehu.es/handle/10810/62381
http://addi.ehu.es/handle/10810/59035
http://addi.ehu.es/handle/10810/57210
http://addi.ehu.es/handle/10810/62781
http://addi.ehu.es/handle/10810/60200
http://addi.ehu.es/handle/10810/59343
http://addi.ehu.es/handle/10810/62662
http://addi.ehu.es/handle/10810/57327
http://addi.ehu.es/handle/10810/59415
http://addi.ehu.es/handle/10810/58486
http://addi.ehu.es/handle/10810/62055
http://addi.ehu.es/handle/10810/61521
http://addi.ehu.es/handle/10810/59830
http://addi.ehu.es/handle/10810/60994
http://addi.ehu.es/handle/10810/59754
http://addi.ehu.es/handle/10810/58549
http://addi.ehu.es/handle/10810/57947
http://addi.ehu.es/handle/10810/59235
http://addi.ehu.es/handle/10810/61565
http://addi.ehu.es/handle/10810/62862
http://addi.ehu.es/handle/10810/58209
http://addi.ehu.es/handle/10810/60510
http://addi.ehu.es/handle/10810/57540
http://addi.ehu.es/handle/10810/62359
http://addi.ehu.es/handle/10810/61300
http://addi.ehu.es/handle/10810/60932
http://addi.ehu.es/handle/10810/62098
http://addi.ehu.es/handle/10810/60016
http://addi.ehu.es/handle/10810/63113
http://addi.ehu.es/handle/10810/63081
http://addi.ehu.es/handle/10810/61725
http://addi.ehu.es/handle/10810/59001
http://addi.ehu.es/handle/10810/59710
http://addi.ehu.es/handle/10810/61081
http://addi.ehu.es/handle/10810/60289
http://addi.ehu.es/handle/10810/62349
http://addi.ehu.es/handle/10810/61230
http://addi.ehu.es/handle/10810/58767
http://addi.ehu.es/handle/10810/63022
http://addi.ehu.es/handle/10810/62388
http://addi.ehu.es/handle/10810/58508
http://addi.ehu.es/handle/10810/62450
http://addi.ehu.es/handle/10810/60505
http://addi.ehu.es/handle/10810/60067
http://addi.ehu.es/handle/10810/61846
http://addi.ehu.es/handle/10810/61711
http://addi.ehu.es/handle/10810/59790
http://addi.ehu.es/handle/10810/56995
http://addi.ehu.es/handle/10810/59852
http://addi.ehu.es/handle/10810/58933
http://addi.ehu.es/handle/10810/58110
http://addi.ehu.es/handle/10810/58663
http://addi.ehu.es/handle/10810/59653
http://addi.ehu.es/handle/10810/62973
http://addi.ehu.es/handle/10810/63278
http://addi.ehu.es/handle/10810/58244
http://addi.ehu.es/handle/10810/63130
http://addi.ehu.es/handle/10810/57489
http://addi.ehu.es/handle/10810/62560
http://addi.ehu.es/handle/10810/63256
http://addi.ehu.es/handle/10810/61215
http://addi.ehu.es/handle/10810/61388
http://addi.ehu.es/handle/10810/57240
http://addi.ehu.es/handle/10810/61757
http://addi.ehu.es/handle/10810/61114
http://addi.ehu.es/handle/10810/61634
http://addi.ehu.es/handle/10810/60241
http://addi.ehu.es/handle/10810/61954
http://addi.ehu.es/handle/10810/61935
http://addi.ehu.es/handle/10810/57815
http://addi.ehu.es/handle/10810/57798
http://addi.ehu.es/handle/10810/58102
http://addi.ehu.es/handle/10810/60212
http://addi.ehu.es/handle/10810/56990
http://addi.ehu.es/handle/10810/60084
http://addi.ehu.es/handle/10810/58528
http://addi.ehu.es/handle/10810/59559
http://addi.ehu.es/handle/10810/59585
http://addi.ehu.es/handle/10810/60003
http://addi.ehu.es/handle/10810/57602
http://addi.ehu.es/handle/10810/62259
http://addi.ehu.es/handle/10810/60051
http://addi.ehu.es/handle/10810/60199
http://addi.ehu.es/handle/10810/61327
http://addi.ehu.es/handle/10810/62479
http://addi.ehu.es/handle/10810/62858
http://addi.ehu.es/handle/10810/63079
http://addi.ehu.es/handle/10810/63082
http://addi.ehu.es/handle/10810/59738
http://addi.ehu.es/handle/10810/57803
http://addi.ehu.es/handle/10810/57671
http://addi.ehu.es/handle/10810/59931
http://addi.ehu.es/handle/10810/58203
http://addi.ehu.es/handle/10810/57845
http://addi.ehu.es/handle/10810/59577
http://addi.ehu.es/handle/10810/58762
http://addi.ehu.es/handle/10810/60549
http://addi.ehu.es/handle/10810/59234
http://addi.ehu.es/handle/10810/61455
http://addi.ehu.es/handle/10810/57930
http://addi.ehu.es/handle/10810/57882
http://addi.ehu.es/handle/10810/61862
http://addi.ehu.es/handle/10810/61206
http://addi.ehu.es/handle/10810/63138
http://addi.ehu.es/handle/10810/59876
http://addi.ehu.es/handle/10810/57674
http://addi.ehu.es/handle/10810/58778
http://addi.ehu.es/handle/10810/58725
http://addi.ehu.es/handle/10810/62771
http://addi.ehu.es/handle/10810/59345
http://addi.ehu.es/handle/10810/61681
http://addi.ehu.es/handle/10810/63144
http://addi.ehu.es/handle/10810/60555
http://addi.ehu.es/handle/10810/58336
http://addi.ehu.es/handle/10810/62763
http://addi.ehu.es/handle/10810/61919
http://addi.ehu.es/handle/10810/61538
http://addi.ehu.es/handle/10810/61798
http://addi.ehu.es/handle/10810/60420
http://addi.ehu.es/handle/10810/59602
http://addi.ehu.es/handle/10810/59383
http://addi.ehu.es/handle/10810/57737
http://addi.ehu.es/handle/10810/61420
http://addi.ehu.es/handle/10810/57006
http://addi.ehu.es/handle/10810/59443
http://addi.ehu.es/handle/10810/58586
http://addi.ehu.es/handle/10810/61639
http://addi.ehu.es/handle/10810/60679
http://addi.ehu.es/handle/10810/57238
http://addi.ehu.es/handle/10810/57731
http://addi.ehu.es/handle/10810/59727
http://addi.ehu.es/handle/10810/62849
http://addi.ehu.es/handle/10810/62729
http://addi.ehu.es/handle/10810/60133
http://addi.ehu.es/handle/10810/63188
http://addi.ehu.es/handle/10810/59202
http://addi.ehu.es/handle/10810/59846
http://addi.ehu.es/handle/10810/61135
http://addi.ehu.es/handle/10810/60262
http://addi.ehu.es/handle/10810/59429
http://addi.ehu.es/handle/10810/59095
http://addi.ehu.es/handle/10810/59593
http://addi.ehu.es/handle/10810/61059
http://addi.ehu.es/handle/10810/62666
http://addi.ehu.es/handle/10810/58727
http://addi.ehu.es/handle/10810/61037
http://addi.ehu.es/handle/10810/63293
http://addi.ehu.es/handle/10810/58186
http://addi.ehu.es/handle/10810/60792
http://addi.ehu.es/handle/10810/60615
http://addi.ehu.es/handle/10810/61372
http://addi.ehu.es/handle/10810/57886
http://addi.ehu.es/handle/10810/62816
http://addi.ehu.es/handle/10810/61226
http://addi.ehu.es/handle/10810/58609
http://addi.ehu.es/handle/10810/58081
http://addi.ehu.es/handle/10810/62426
http://addi.ehu.es/handle/10810/59244
http://addi.ehu.es/handle/10810/59380
http://addi.ehu.es/handle/10810/58422
http://addi.ehu.es/handle/10810/60663
http://addi.ehu.es/handle/10810/59798
http://addi.ehu.es/handle/10810/58458
http://addi.ehu.es/handle/10810/61279
http://addi.ehu.es/handle/10810/63028
http://addi.ehu.es/handle/10810/60271
http://addi.ehu.es/handle/10810/59272
http://addi.ehu.es/handle/10810/59332
http://addi.ehu.es/handle/10810/62471