http://addi.ehu.es/handle/10810/66694
http://addi.ehu.es/handle/10810/57780
http://addi.ehu.es/handle/10810/68466
http://addi.ehu.es/handle/10810/62586
http://addi.ehu.es/handle/10810/70446
http://addi.ehu.es/handle/10810/65635
http://addi.ehu.es/handle/10810/66879
http://addi.ehu.es/handle/10810/58750
http://addi.ehu.es/handle/10810/60097
http://addi.ehu.es/handle/10810/67623
http://addi.ehu.es/handle/10810/61055
http://addi.ehu.es/handle/10810/67041
http://addi.ehu.es/handle/10810/57069
http://addi.ehu.es/handle/10810/58832
http://addi.ehu.es/handle/10810/62420
http://addi.ehu.es/handle/10810/68371
http://addi.ehu.es/handle/10810/64991
http://addi.ehu.es/handle/10810/59712
http://addi.ehu.es/handle/10810/59866
http://addi.ehu.es/handle/10810/57805
http://addi.ehu.es/handle/10810/69172
http://addi.ehu.es/handle/10810/68438
http://addi.ehu.es/handle/10810/68533
http://addi.ehu.es/handle/10810/57211
http://addi.ehu.es/handle/10810/60338
http://addi.ehu.es/handle/10810/62821
http://addi.ehu.es/handle/10810/60336
http://addi.ehu.es/handle/10810/62281
http://addi.ehu.es/handle/10810/61951
http://addi.ehu.es/handle/10810/57110
http://addi.ehu.es/handle/10810/57181
http://addi.ehu.es/handle/10810/69788
http://addi.ehu.es/handle/10810/66849
http://addi.ehu.es/handle/10810/63980
http://addi.ehu.es/handle/10810/64462
http://addi.ehu.es/handle/10810/68968
http://addi.ehu.es/handle/10810/67734
http://addi.ehu.es/handle/10810/58257
http://addi.ehu.es/handle/10810/61530
http://addi.ehu.es/handle/10810/68509
http://addi.ehu.es/handle/10810/61717
http://addi.ehu.es/handle/10810/61766
http://addi.ehu.es/handle/10810/59498
http://addi.ehu.es/handle/10810/60004
http://addi.ehu.es/handle/10810/64427
http://addi.ehu.es/handle/10810/66695
http://addi.ehu.es/handle/10810/59465
http://addi.ehu.es/handle/10810/65431
http://addi.ehu.es/handle/10810/58296
http://addi.ehu.es/handle/10810/65950
http://addi.ehu.es/handle/10810/61797
http://addi.ehu.es/handle/10810/61557
http://addi.ehu.es/handle/10810/68690
http://addi.ehu.es/handle/10810/62209
http://addi.ehu.es/handle/10810/70375
http://addi.ehu.es/handle/10810/60493
http://addi.ehu.es/handle/10810/59192
http://addi.ehu.es/handle/10810/58555
http://addi.ehu.es/handle/10810/70365
http://addi.ehu.es/handle/10810/65648
http://addi.ehu.es/handle/10810/66569
http://addi.ehu.es/handle/10810/63221
http://addi.ehu.es/handle/10810/67077
http://addi.ehu.es/handle/10810/61500
http://addi.ehu.es/handle/10810/65332
http://addi.ehu.es/handle/10810/65232
http://addi.ehu.es/handle/10810/67795
http://addi.ehu.es/handle/10810/68029
http://addi.ehu.es/handle/10810/66820
http://addi.ehu.es/handle/10810/63966
http://addi.ehu.es/handle/10810/61068
http://addi.ehu.es/handle/10810/59449
http://addi.ehu.es/handle/10810/61403
http://addi.ehu.es/handle/10810/65844
http://addi.ehu.es/handle/10810/61756
http://addi.ehu.es/handle/10810/57867
http://addi.ehu.es/handle/10810/70078
http://addi.ehu.es/handle/10810/64077
http://addi.ehu.es/handle/10810/60322
http://addi.ehu.es/handle/10810/57542
http://addi.ehu.es/handle/10810/68639
http://addi.ehu.es/handle/10810/60159
http://addi.ehu.es/handle/10810/68700
http://addi.ehu.es/handle/10810/65889
http://addi.ehu.es/handle/10810/59853
http://addi.ehu.es/handle/10810/61701
http://addi.ehu.es/handle/10810/66247
http://addi.ehu.es/handle/10810/58911
http://addi.ehu.es/handle/10810/67098
http://addi.ehu.es/handle/10810/65394
http://addi.ehu.es/handle/10810/69630
http://addi.ehu.es/handle/10810/59679
http://addi.ehu.es/handle/10810/62321
http://addi.ehu.es/handle/10810/59395
http://addi.ehu.es/handle/10810/67868
http://addi.ehu.es/handle/10810/59581
http://addi.ehu.es/handle/10810/67196
http://addi.ehu.es/handle/10810/58106
http://addi.ehu.es/handle/10810/68057
http://addi.ehu.es/handle/10810/64360
http://addi.ehu.es/handle/10810/65851
http://addi.ehu.es/handle/10810/68075
http://addi.ehu.es/handle/10810/66613
http://addi.ehu.es/handle/10810/66335
http://addi.ehu.es/handle/10810/67201
http://addi.ehu.es/handle/10810/68465
http://addi.ehu.es/handle/10810/69705
http://addi.ehu.es/handle/10810/63927
http://addi.ehu.es/handle/10810/58617
http://addi.ehu.es/handle/10810/60509
http://addi.ehu.es/handle/10810/57713
http://addi.ehu.es/handle/10810/62673
http://addi.ehu.es/handle/10810/58846
http://addi.ehu.es/handle/10810/69628
http://addi.ehu.es/handle/10810/58083
http://addi.ehu.es/handle/10810/59565
http://addi.ehu.es/handle/10810/57890
http://addi.ehu.es/handle/10810/68250
http://addi.ehu.es/handle/10810/67619
http://addi.ehu.es/handle/10810/58200
http://addi.ehu.es/handle/10810/65751
http://addi.ehu.es/handle/10810/62472
http://addi.ehu.es/handle/10810/69107
http://addi.ehu.es/handle/10810/68372
http://addi.ehu.es/handle/10810/64704
http://addi.ehu.es/handle/10810/69494
http://addi.ehu.es/handle/10810/65617
http://addi.ehu.es/handle/10810/69393
http://addi.ehu.es/handle/10810/65835
http://addi.ehu.es/handle/10810/57345
http://addi.ehu.es/handle/10810/64309
http://addi.ehu.es/handle/10810/63213
http://addi.ehu.es/handle/10810/63381
http://addi.ehu.es/handle/10810/61359
http://addi.ehu.es/handle/10810/67866
http://addi.ehu.es/handle/10810/67736
http://addi.ehu.es/handle/10810/64164
http://addi.ehu.es/handle/10810/64332
http://addi.ehu.es/handle/10810/66248
http://addi.ehu.es/handle/10810/60194
http://addi.ehu.es/handle/10810/65319
http://addi.ehu.es/handle/10810/64982
http://addi.ehu.es/handle/10810/65905
http://addi.ehu.es/handle/10810/63094
http://addi.ehu.es/handle/10810/66347
http://addi.ehu.es/handle/10810/69342
http://addi.ehu.es/handle/10810/57594
http://addi.ehu.es/handle/10810/66123
http://addi.ehu.es/handle/10810/68565
http://addi.ehu.es/handle/10810/63932
http://addi.ehu.es/handle/10810/60324
http://addi.ehu.es/handle/10810/60353
http://addi.ehu.es/handle/10810/69079
http://addi.ehu.es/handle/10810/68716
http://addi.ehu.es/handle/10810/62263
http://addi.ehu.es/handle/10810/57927
http://addi.ehu.es/handle/10810/62470
http://addi.ehu.es/handle/10810/64487
http://addi.ehu.es/handle/10810/61078
http://addi.ehu.es/handle/10810/66514
http://addi.ehu.es/handle/10810/69594
http://addi.ehu.es/handle/10810/64547
http://addi.ehu.es/handle/10810/63447
http://addi.ehu.es/handle/10810/57861
http://addi.ehu.es/handle/10810/60348
http://addi.ehu.es/handle/10810/64590
http://addi.ehu.es/handle/10810/68165
http://addi.ehu.es/handle/10810/59982
http://addi.ehu.es/handle/10810/64414
http://addi.ehu.es/handle/10810/63415
http://addi.ehu.es/handle/10810/60856
http://addi.ehu.es/handle/10810/66497
http://addi.ehu.es/handle/10810/68133
http://addi.ehu.es/handle/10810/67822
http://addi.ehu.es/handle/10810/66926
http://addi.ehu.es/handle/10810/68456
http://addi.ehu.es/handle/10810/57555
http://addi.ehu.es/handle/10810/69713
http://addi.ehu.es/handle/10810/57732
http://addi.ehu.es/handle/10810/70049
http://addi.ehu.es/handle/10810/63848
http://addi.ehu.es/handle/10810/66947
http://addi.ehu.es/handle/10810/66115
http://addi.ehu.es/handle/10810/64144
http://addi.ehu.es/handle/10810/59127
http://addi.ehu.es/handle/10810/57573
http://addi.ehu.es/handle/10810/60661
http://addi.ehu.es/handle/10810/65655
http://addi.ehu.es/handle/10810/64035
http://addi.ehu.es/handle/10810/57507
http://addi.ehu.es/handle/10810/61605
http://addi.ehu.es/handle/10810/69804
http://addi.ehu.es/handle/10810/57723
http://addi.ehu.es/handle/10810/68092
http://addi.ehu.es/handle/10810/65255
http://addi.ehu.es/handle/10810/69970
http://addi.ehu.es/handle/10810/61916
http://addi.ehu.es/handle/10810/63553
http://addi.ehu.es/handle/10810/65402
http://addi.ehu.es/handle/10810/60094
http://addi.ehu.es/handle/10810/57505
http://addi.ehu.es/handle/10810/62457
http://addi.ehu.es/handle/10810/69842
http://addi.ehu.es/handle/10810/60060
http://addi.ehu.es/handle/10810/70066
http://addi.ehu.es/handle/10810/66749
http://addi.ehu.es/handle/10810/68793
http://addi.ehu.es/handle/10810/60881
http://addi.ehu.es/handle/10810/59859
http://addi.ehu.es/handle/10810/65265
http://addi.ehu.es/handle/10810/67958
http://addi.ehu.es/handle/10810/70333
http://addi.ehu.es/handle/10810/58789
http://addi.ehu.es/handle/10810/62122
http://addi.ehu.es/handle/10810/61780
http://addi.ehu.es/handle/10810/68678
http://addi.ehu.es/handle/10810/66286
http://addi.ehu.es/handle/10810/69934
http://addi.ehu.es/handle/10810/59641
http://addi.ehu.es/handle/10810/68843
http://addi.ehu.es/handle/10810/58736
http://addi.ehu.es/handle/10810/62636
http://addi.ehu.es/handle/10810/69626
http://addi.ehu.es/handle/10810/66450
http://addi.ehu.es/handle/10810/67267
http://addi.ehu.es/handle/10810/57030
http://addi.ehu.es/handle/10810/64476
http://addi.ehu.es/handle/10810/61867
http://addi.ehu.es/handle/10810/69568
http://addi.ehu.es/handle/10810/67684
http://addi.ehu.es/handle/10810/58421
http://addi.ehu.es/handle/10810/63405
http://addi.ehu.es/handle/10810/67161
http://addi.ehu.es/handle/10810/61516
http://addi.ehu.es/handle/10810/63533
http://addi.ehu.es/handle/10810/61510
http://addi.ehu.es/handle/10810/57809
http://addi.ehu.es/handle/10810/66048
http://addi.ehu.es/handle/10810/58347
http://addi.ehu.es/handle/10810/68018
http://addi.ehu.es/handle/10810/65440
http://addi.ehu.es/handle/10810/63743
http://addi.ehu.es/handle/10810/57635
http://addi.ehu.es/handle/10810/66503
http://addi.ehu.es/handle/10810/60203
http://addi.ehu.es/handle/10810/64572
http://addi.ehu.es/handle/10810/58093
http://addi.ehu.es/handle/10810/67420
http://addi.ehu.es/handle/10810/65203
http://addi.ehu.es/handle/10810/70188
http://addi.ehu.es/handle/10810/66409
http://addi.ehu.es/handle/10810/64628
http://addi.ehu.es/handle/10810/57206
http://addi.ehu.es/handle/10810/63834
http://addi.ehu.es/handle/10810/70302
http://addi.ehu.es/handle/10810/70366
http://addi.ehu.es/handle/10810/58370
http://addi.ehu.es/handle/10810/68726
http://addi.ehu.es/handle/10810/69211
http://addi.ehu.es/handle/10810/59348
http://addi.ehu.es/handle/10810/61469
http://addi.ehu.es/handle/10810/66413
http://addi.ehu.es/handle/10810/57318
http://addi.ehu.es/handle/10810/60888
http://addi.ehu.es/handle/10810/67694
http://addi.ehu.es/handle/10810/69862
http://addi.ehu.es/handle/10810/64696
http://addi.ehu.es/handle/10810/65284
http://addi.ehu.es/handle/10810/60620
http://addi.ehu.es/handle/10810/59819
http://addi.ehu.es/handle/10810/64151
http://addi.ehu.es/handle/10810/67217
http://addi.ehu.es/handle/10810/68167
http://addi.ehu.es/handle/10810/69047
http://addi.ehu.es/handle/10810/61781
http://addi.ehu.es/handle/10810/68762
http://addi.ehu.es/handle/10810/60264
http://addi.ehu.es/handle/10810/58299
http://addi.ehu.es/handle/10810/58098
http://addi.ehu.es/handle/10810/58872
http://addi.ehu.es/handle/10810/65839
http://addi.ehu.es/handle/10810/58499
http://addi.ehu.es/handle/10810/59266
http://addi.ehu.es/handle/10810/69939
http://addi.ehu.es/handle/10810/61122
http://addi.ehu.es/handle/10810/60209
http://addi.ehu.es/handle/10810/62682
http://addi.ehu.es/handle/10810/62504
http://addi.ehu.es/handle/10810/59564
http://addi.ehu.es/handle/10810/58311
http://addi.ehu.es/handle/10810/65864
http://addi.ehu.es/handle/10810/59324
http://addi.ehu.es/handle/10810/64236
http://addi.ehu.es/handle/10810/57040
http://addi.ehu.es/handle/10810/68457
http://addi.ehu.es/handle/10810/58428
http://addi.ehu.es/handle/10810/65395
http://addi.ehu.es/handle/10810/66446
http://addi.ehu.es/handle/10810/68926
http://addi.ehu.es/handle/10810/68887
http://addi.ehu.es/handle/10810/58539
http://addi.ehu.es/handle/10810/67632
http://addi.ehu.es/handle/10810/57279
http://addi.ehu.es/handle/10810/65296
http://addi.ehu.es/handle/10810/61587
http://addi.ehu.es/handle/10810/67345
http://addi.ehu.es/handle/10810/60383
http://addi.ehu.es/handle/10810/67490
http://addi.ehu.es/handle/10810/68242
http://addi.ehu.es/handle/10810/65134
http://addi.ehu.es/handle/10810/70468
http://addi.ehu.es/handle/10810/62851
http://addi.ehu.es/handle/10810/57751
http://addi.ehu.es/handle/10810/66038
http://addi.ehu.es/handle/10810/57424
http://addi.ehu.es/handle/10810/63471
http://addi.ehu.es/handle/10810/63147
http://addi.ehu.es/handle/10810/65111
http://addi.ehu.es/handle/10810/62255
http://addi.ehu.es/handle/10810/66677
http://addi.ehu.es/handle/10810/67396
http://addi.ehu.es/handle/10810/68329
http://addi.ehu.es/handle/10810/57897
http://addi.ehu.es/handle/10810/61865
http://addi.ehu.es/handle/10810/62121
http://addi.ehu.es/handle/10810/60717
http://addi.ehu.es/handle/10810/61067
http://addi.ehu.es/handle/10810/58109
http://addi.ehu.es/handle/10810/67671
http://addi.ehu.es/handle/10810/66825
http://addi.ehu.es/handle/10810/68884
http://addi.ehu.es/handle/10810/64816
http://addi.ehu.es/handle/10810/70220
http://addi.ehu.es/handle/10810/67626
http://addi.ehu.es/handle/10810/68790
http://addi.ehu.es/handle/10810/64731
http://addi.ehu.es/handle/10810/68866
http://addi.ehu.es/handle/10810/70429
http://addi.ehu.es/handle/10810/57071
http://addi.ehu.es/handle/10810/69416
http://addi.ehu.es/handle/10810/70091
http://addi.ehu.es/handle/10810/68390
http://addi.ehu.es/handle/10810/69244
http://addi.ehu.es/handle/10810/66685
http://addi.ehu.es/handle/10810/68907
http://addi.ehu.es/handle/10810/57209
http://addi.ehu.es/handle/10810/61735
http://addi.ehu.es/handle/10810/58278
http://addi.ehu.es/handle/10810/63344
http://addi.ehu.es/handle/10810/67560
http://addi.ehu.es/handle/10810/68284
http://addi.ehu.es/handle/10810/64822
http://addi.ehu.es/handle/10810/60177
http://addi.ehu.es/handle/10810/66342
http://addi.ehu.es/handle/10810/63025
http://addi.ehu.es/handle/10810/61089
http://addi.ehu.es/handle/10810/65691
http://addi.ehu.es/handle/10810/58853
http://addi.ehu.es/handle/10810/58795
http://addi.ehu.es/handle/10810/68288
http://addi.ehu.es/handle/10810/66024
http://addi.ehu.es/handle/10810/68564
http://addi.ehu.es/handle/10810/60803
http://addi.ehu.es/handle/10810/66917
http://addi.ehu.es/handle/10810/68878
http://addi.ehu.es/handle/10810/67224
http://addi.ehu.es/handle/10810/62435
http://addi.ehu.es/handle/10810/70027
http://addi.ehu.es/handle/10810/70130
http://addi.ehu.es/handle/10810/60254
http://addi.ehu.es/handle/10810/67102
http://addi.ehu.es/handle/10810/64841
http://addi.ehu.es/handle/10810/63586
http://addi.ehu.es/handle/10810/59660
http://addi.ehu.es/handle/10810/69324
http://addi.ehu.es/handle/10810/68641
http://addi.ehu.es/handle/10810/59865
http://addi.ehu.es/handle/10810/67342
http://addi.ehu.es/handle/10810/59434
http://addi.ehu.es/handle/10810/65760
http://addi.ehu.es/handle/10810/64463
http://addi.ehu.es/handle/10810/57441
http://addi.ehu.es/handle/10810/69440
http://addi.ehu.es/handle/10810/60842
http://addi.ehu.es/handle/10810/65411
http://addi.ehu.es/handle/10810/69704
http://addi.ehu.es/handle/10810/65503
http://addi.ehu.es/handle/10810/57180
http://addi.ehu.es/handle/10810/65656
http://addi.ehu.es/handle/10810/62153
http://addi.ehu.es/handle/10810/63821
http://addi.ehu.es/handle/10810/57652
http://addi.ehu.es/handle/10810/61542
http://addi.ehu.es/handle/10810/58379
http://addi.ehu.es/handle/10810/57075
http://addi.ehu.es/handle/10810/61211
http://addi.ehu.es/handle/10810/60861
http://addi.ehu.es/handle/10810/58963
http://addi.ehu.es/handle/10810/65779
http://addi.ehu.es/handle/10810/70357
http://addi.ehu.es/handle/10810/70449
http://addi.ehu.es/handle/10810/63448
http://addi.ehu.es/handle/10810/69112
http://addi.ehu.es/handle/10810/64875
http://addi.ehu.es/handle/10810/59856
http://addi.ehu.es/handle/10810/60839
http://addi.ehu.es/handle/10810/59924
http://addi.ehu.es/handle/10810/63503
http://addi.ehu.es/handle/10810/66014
http://addi.ehu.es/handle/10810/68221
http://addi.ehu.es/handle/10810/69327
http://addi.ehu.es/handle/10810/64022
http://addi.ehu.es/handle/10810/59154
http://addi.ehu.es/handle/10810/65866
http://addi.ehu.es/handle/10810/65964
http://addi.ehu.es/handle/10810/66131
http://addi.ehu.es/handle/10810/60862
http://addi.ehu.es/handle/10810/66878
http://addi.ehu.es/handle/10810/69894
http://addi.ehu.es/handle/10810/57918
http://addi.ehu.es/handle/10810/62966
http://addi.ehu.es/handle/10810/62256
http://addi.ehu.es/handle/10810/69199
http://addi.ehu.es/handle/10810/67461
http://addi.ehu.es/handle/10810/67992
http://addi.ehu.es/handle/10810/68089
http://addi.ehu.es/handle/10810/68085
http://addi.ehu.es/handle/10810/58672
http://addi.ehu.es/handle/10810/70494
http://addi.ehu.es/handle/10810/63140
http://addi.ehu.es/handle/10810/63243
http://addi.ehu.es/handle/10810/62565
http://addi.ehu.es/handle/10810/66261
http://addi.ehu.es/handle/10810/68797
http://addi.ehu.es/handle/10810/64406
http://addi.ehu.es/handle/10810/67622
http://addi.ehu.es/handle/10810/67976
http://addi.ehu.es/handle/10810/68545
http://addi.ehu.es/handle/10810/59322
http://addi.ehu.es/handle/10810/61360
http://addi.ehu.es/handle/10810/70087
http://addi.ehu.es/handle/10810/58652
http://addi.ehu.es/handle/10810/65562
http://addi.ehu.es/handle/10810/67395
http://addi.ehu.es/handle/10810/62575
http://addi.ehu.es/handle/10810/61692
http://addi.ehu.es/handle/10810/62746
http://addi.ehu.es/handle/10810/60569
http://addi.ehu.es/handle/10810/60385
http://addi.ehu.es/handle/10810/63062
http://addi.ehu.es/handle/10810/60370
http://addi.ehu.es/handle/10810/57222
http://addi.ehu.es/handle/10810/68658
http://addi.ehu.es/handle/10810/69431
http://addi.ehu.es/handle/10810/62642
http://addi.ehu.es/handle/10810/68600
http://addi.ehu.es/handle/10810/60917
http://addi.ehu.es/handle/10810/62800
http://addi.ehu.es/handle/10810/58117
http://addi.ehu.es/handle/10810/64111
http://addi.ehu.es/handle/10810/57527
http://addi.ehu.es/handle/10810/60155
http://addi.ehu.es/handle/10810/69813
http://addi.ehu.es/handle/10810/66965
http://addi.ehu.es/handle/10810/68314
http://addi.ehu.es/handle/10810/60431
http://addi.ehu.es/handle/10810/66435
http://addi.ehu.es/handle/10810/58363
http://addi.ehu.es/handle/10810/69316
http://addi.ehu.es/handle/10810/56922
http://addi.ehu.es/handle/10810/68828
http://addi.ehu.es/handle/10810/65059
http://addi.ehu.es/handle/10810/65118
http://addi.ehu.es/handle/10810/69969
http://addi.ehu.es/handle/10810/68874
http://addi.ehu.es/handle/10810/60725
http://addi.ehu.es/handle/10810/67612
http://addi.ehu.es/handle/10810/65072
http://addi.ehu.es/handle/10810/60243
http://addi.ehu.es/handle/10810/66956
http://addi.ehu.es/handle/10810/60027
http://addi.ehu.es/handle/10810/67947
http://addi.ehu.es/handle/10810/60311
http://addi.ehu.es/handle/10810/62797
http://addi.ehu.es/handle/10810/58629
http://addi.ehu.es/handle/10810/64257
http://addi.ehu.es/handle/10810/66167
http://addi.ehu.es/handle/10810/69182
http://addi.ehu.es/handle/10810/66208
http://addi.ehu.es/handle/10810/70233
http://addi.ehu.es/handle/10810/69921
http://addi.ehu.es/handle/10810/63633
http://addi.ehu.es/handle/10810/66272
http://addi.ehu.es/handle/10810/60876
http://addi.ehu.es/handle/10810/60235
http://addi.ehu.es/handle/10810/61365
http://addi.ehu.es/handle/10810/60234
http://addi.ehu.es/handle/10810/70024
http://addi.ehu.es/handle/10810/64800
http://addi.ehu.es/handle/10810/59986
http://addi.ehu.es/handle/10810/60532
http://addi.ehu.es/handle/10810/66041
http://addi.ehu.es/handle/10810/64771
http://addi.ehu.es/handle/10810/66896
http://addi.ehu.es/handle/10810/61263
http://addi.ehu.es/handle/10810/64498
http://addi.ehu.es/handle/10810/59742
http://addi.ehu.es/handle/10810/62144
http://addi.ehu.es/handle/10810/65802
http://addi.ehu.es/handle/10810/70020
http://addi.ehu.es/handle/10810/65996
http://addi.ehu.es/handle/10810/59039
http://addi.ehu.es/handle/10810/66278
http://addi.ehu.es/handle/10810/67923
http://addi.ehu.es/handle/10810/67410