http://addi.ehu.es/handle/10810/60040
http://addi.ehu.es/handle/10810/57166
http://addi.ehu.es/handle/10810/64270
http://addi.ehu.es/handle/10810/60227
http://addi.ehu.es/handle/10810/64681
http://addi.ehu.es/handle/10810/58479
http://addi.ehu.es/handle/10810/66714
http://addi.ehu.es/handle/10810/63241
http://addi.ehu.es/handle/10810/63993
http://addi.ehu.es/handle/10810/61564
http://addi.ehu.es/handle/10810/66779
http://addi.ehu.es/handle/10810/64552
http://addi.ehu.es/handle/10810/61772
http://addi.ehu.es/handle/10810/60783
http://addi.ehu.es/handle/10810/59645
http://addi.ehu.es/handle/10810/57666
http://addi.ehu.es/handle/10810/62805
http://addi.ehu.es/handle/10810/62298
http://addi.ehu.es/handle/10810/58905
http://addi.ehu.es/handle/10810/61855
http://addi.ehu.es/handle/10810/61138
http://addi.ehu.es/handle/10810/62598
http://addi.ehu.es/handle/10810/60224
http://addi.ehu.es/handle/10810/61214
http://addi.ehu.es/handle/10810/65546
http://addi.ehu.es/handle/10810/59050
http://addi.ehu.es/handle/10810/64366
http://addi.ehu.es/handle/10810/61799
http://addi.ehu.es/handle/10810/63345
http://addi.ehu.es/handle/10810/63089
http://addi.ehu.es/handle/10810/58272
http://addi.ehu.es/handle/10810/65987
http://addi.ehu.es/handle/10810/64422
http://addi.ehu.es/handle/10810/67378
http://addi.ehu.es/handle/10810/63869
http://addi.ehu.es/handle/10810/57121
http://addi.ehu.es/handle/10810/61708
http://addi.ehu.es/handle/10810/60977
http://addi.ehu.es/handle/10810/59863
http://addi.ehu.es/handle/10810/63724
http://addi.ehu.es/handle/10810/61929
http://addi.ehu.es/handle/10810/57485
http://addi.ehu.es/handle/10810/63939
http://addi.ehu.es/handle/10810/66632
http://addi.ehu.es/handle/10810/61554
http://addi.ehu.es/handle/10810/58150
http://addi.ehu.es/handle/10810/59899
http://addi.ehu.es/handle/10810/57863
http://addi.ehu.es/handle/10810/58931
http://addi.ehu.es/handle/10810/64105
http://addi.ehu.es/handle/10810/63920
http://addi.ehu.es/handle/10810/60416
http://addi.ehu.es/handle/10810/58541
http://addi.ehu.es/handle/10810/57346
http://addi.ehu.es/handle/10810/57629
http://addi.ehu.es/handle/10810/67322
http://addi.ehu.es/handle/10810/59006
http://addi.ehu.es/handle/10810/61686
http://addi.ehu.es/handle/10810/67302
http://addi.ehu.es/handle/10810/59561
http://addi.ehu.es/handle/10810/61770
http://addi.ehu.es/handle/10810/61994
http://addi.ehu.es/handle/10810/59454
http://addi.ehu.es/handle/10810/64647
http://addi.ehu.es/handle/10810/66288
http://addi.ehu.es/handle/10810/59890
http://addi.ehu.es/handle/10810/57951
http://addi.ehu.es/handle/10810/66707
http://addi.ehu.es/handle/10810/57307
http://addi.ehu.es/handle/10810/64380
http://addi.ehu.es/handle/10810/59751
http://addi.ehu.es/handle/10810/61292
http://addi.ehu.es/handle/10810/60716
http://addi.ehu.es/handle/10810/59012
http://addi.ehu.es/handle/10810/65121
http://addi.ehu.es/handle/10810/65791
http://addi.ehu.es/handle/10810/60653
http://addi.ehu.es/handle/10810/63835
http://addi.ehu.es/handle/10810/67158
http://addi.ehu.es/handle/10810/57202
http://addi.ehu.es/handle/10810/65663
http://addi.ehu.es/handle/10810/60894
http://addi.ehu.es/handle/10810/61488
http://addi.ehu.es/handle/10810/64568
http://addi.ehu.es/handle/10810/61127
http://addi.ehu.es/handle/10810/60364
http://addi.ehu.es/handle/10810/63470
http://addi.ehu.es/handle/10810/58535
http://addi.ehu.es/handle/10810/62448
http://addi.ehu.es/handle/10810/60267
http://addi.ehu.es/handle/10810/58674
http://addi.ehu.es/handle/10810/60837
http://addi.ehu.es/handle/10810/61847
http://addi.ehu.es/handle/10810/60448
http://addi.ehu.es/handle/10810/62542
http://addi.ehu.es/handle/10810/57226
http://addi.ehu.es/handle/10810/61683
http://addi.ehu.es/handle/10810/61283
http://addi.ehu.es/handle/10810/59099
http://addi.ehu.es/handle/10810/62411
http://addi.ehu.es/handle/10810/65321
http://addi.ehu.es/handle/10810/58301
http://addi.ehu.es/handle/10810/60695
http://addi.ehu.es/handle/10810/61090
http://addi.ehu.es/handle/10810/57811
http://addi.ehu.es/handle/10810/61672
http://addi.ehu.es/handle/10810/62786
http://addi.ehu.es/handle/10810/67298
http://addi.ehu.es/handle/10810/66719
http://addi.ehu.es/handle/10810/57126
http://addi.ehu.es/handle/10810/64661
http://addi.ehu.es/handle/10810/59055
http://addi.ehu.es/handle/10810/58396
http://addi.ehu.es/handle/10810/57283
http://addi.ehu.es/handle/10810/65684
http://addi.ehu.es/handle/10810/59799
http://addi.ehu.es/handle/10810/65586
http://addi.ehu.es/handle/10810/61471
http://addi.ehu.es/handle/10810/66916
http://addi.ehu.es/handle/10810/60327
http://addi.ehu.es/handle/10810/58786
http://addi.ehu.es/handle/10810/58014
http://addi.ehu.es/handle/10810/58321
http://addi.ehu.es/handle/10810/58972
http://addi.ehu.es/handle/10810/61494
http://addi.ehu.es/handle/10810/58640
http://addi.ehu.es/handle/10810/57639
http://addi.ehu.es/handle/10810/62017
http://addi.ehu.es/handle/10810/58776
http://addi.ehu.es/handle/10810/58172
http://addi.ehu.es/handle/10810/59957
http://addi.ehu.es/handle/10810/63775
http://addi.ehu.es/handle/10810/60609
http://addi.ehu.es/handle/10810/57355
http://addi.ehu.es/handle/10810/64591
http://addi.ehu.es/handle/10810/60935
http://addi.ehu.es/handle/10810/60794
http://addi.ehu.es/handle/10810/59528
http://addi.ehu.es/handle/10810/60146
http://addi.ehu.es/handle/10810/57043
http://addi.ehu.es/handle/10810/65970
http://addi.ehu.es/handle/10810/62561
http://addi.ehu.es/handle/10810/66619
http://addi.ehu.es/handle/10810/63483
http://addi.ehu.es/handle/10810/64318
http://addi.ehu.es/handle/10810/63551
http://addi.ehu.es/handle/10810/58746
http://addi.ehu.es/handle/10810/57902
http://addi.ehu.es/handle/10810/61563
http://addi.ehu.es/handle/10810/64292
http://addi.ehu.es/handle/10810/64206
http://addi.ehu.es/handle/10810/58399
http://addi.ehu.es/handle/10810/65978
http://addi.ehu.es/handle/10810/62408
http://addi.ehu.es/handle/10810/58255
http://addi.ehu.es/handle/10810/66295
http://addi.ehu.es/handle/10810/67488
http://addi.ehu.es/handle/10810/62603
http://addi.ehu.es/handle/10810/63145
http://addi.ehu.es/handle/10810/63439
http://addi.ehu.es/handle/10810/67043
http://addi.ehu.es/handle/10810/59193
http://addi.ehu.es/handle/10810/61764
http://addi.ehu.es/handle/10810/62794
http://addi.ehu.es/handle/10810/65979
http://addi.ehu.es/handle/10810/61904
http://addi.ehu.es/handle/10810/62745
http://addi.ehu.es/handle/10810/66945
http://addi.ehu.es/handle/10810/61503
http://addi.ehu.es/handle/10810/60874
http://addi.ehu.es/handle/10810/61017
http://addi.ehu.es/handle/10810/63696
http://addi.ehu.es/handle/10810/65896
http://addi.ehu.es/handle/10810/59117
http://addi.ehu.es/handle/10810/63594
http://addi.ehu.es/handle/10810/59732
http://addi.ehu.es/handle/10810/63177
http://addi.ehu.es/handle/10810/58612
http://addi.ehu.es/handle/10810/67130
http://addi.ehu.es/handle/10810/58909
http://addi.ehu.es/handle/10810/58188
http://addi.ehu.es/handle/10810/57745
http://addi.ehu.es/handle/10810/62323
http://addi.ehu.es/handle/10810/59574
http://addi.ehu.es/handle/10810/60558
http://addi.ehu.es/handle/10810/63395
http://addi.ehu.es/handle/10810/63992
http://addi.ehu.es/handle/10810/64178
http://addi.ehu.es/handle/10810/63888
http://addi.ehu.es/handle/10810/65066
http://addi.ehu.es/handle/10810/59829
http://addi.ehu.es/handle/10810/64892
http://addi.ehu.es/handle/10810/66800
http://addi.ehu.es/handle/10810/66292
http://addi.ehu.es/handle/10810/63701
http://addi.ehu.es/handle/10810/59879
http://addi.ehu.es/handle/10810/64489
http://addi.ehu.es/handle/10810/58194
http://addi.ehu.es/handle/10810/59057
http://addi.ehu.es/handle/10810/58019
http://addi.ehu.es/handle/10810/61125
http://addi.ehu.es/handle/10810/59286
http://addi.ehu.es/handle/10810/64180
http://addi.ehu.es/handle/10810/59357
http://addi.ehu.es/handle/10810/64055
http://addi.ehu.es/handle/10810/61812
http://addi.ehu.es/handle/10810/57008
http://addi.ehu.es/handle/10810/62547
http://addi.ehu.es/handle/10810/61001
http://addi.ehu.es/handle/10810/64252
http://addi.ehu.es/handle/10810/66060
http://addi.ehu.es/handle/10810/67020
http://addi.ehu.es/handle/10810/59726
http://addi.ehu.es/handle/10810/61962
http://addi.ehu.es/handle/10810/58818
http://addi.ehu.es/handle/10810/66213
http://addi.ehu.es/handle/10810/62085
http://addi.ehu.es/handle/10810/65528
http://addi.ehu.es/handle/10810/63504
http://addi.ehu.es/handle/10810/66221
http://addi.ehu.es/handle/10810/67382
http://addi.ehu.es/handle/10810/56935
http://addi.ehu.es/handle/10810/64586
http://addi.ehu.es/handle/10810/63638
http://addi.ehu.es/handle/10810/66049
http://addi.ehu.es/handle/10810/60756
http://addi.ehu.es/handle/10810/60214
http://addi.ehu.es/handle/10810/63691
http://addi.ehu.es/handle/10810/57905
http://addi.ehu.es/handle/10810/64806
http://addi.ehu.es/handle/10810/58666
http://addi.ehu.es/handle/10810/65092
http://addi.ehu.es/handle/10810/66505
http://addi.ehu.es/handle/10810/56930
http://addi.ehu.es/handle/10810/66963
http://addi.ehu.es/handle/10810/57464
http://addi.ehu.es/handle/10810/65869
http://addi.ehu.es/handle/10810/60443
http://addi.ehu.es/handle/10810/67012
http://addi.ehu.es/handle/10810/60423
http://addi.ehu.es/handle/10810/59096
http://addi.ehu.es/handle/10810/64145
http://addi.ehu.es/handle/10810/62638
http://addi.ehu.es/handle/10810/65744
http://addi.ehu.es/handle/10810/63435
http://addi.ehu.es/handle/10810/61745
http://addi.ehu.es/handle/10810/64443
http://addi.ehu.es/handle/10810/66958
http://addi.ehu.es/handle/10810/65881
http://addi.ehu.es/handle/10810/62442
http://addi.ehu.es/handle/10810/60258
http://addi.ehu.es/handle/10810/62139
http://addi.ehu.es/handle/10810/66337
http://addi.ehu.es/handle/10810/64125
http://addi.ehu.es/handle/10810/62556
http://addi.ehu.es/handle/10810/61854
http://addi.ehu.es/handle/10810/66582
http://addi.ehu.es/handle/10810/67257
http://addi.ehu.es/handle/10810/64828
http://addi.ehu.es/handle/10810/57253
http://addi.ehu.es/handle/10810/58656
http://addi.ehu.es/handle/10810/64756
http://addi.ehu.es/handle/10810/65776
http://addi.ehu.es/handle/10810/61396
http://addi.ehu.es/handle/10810/58954
http://addi.ehu.es/handle/10810/66113
http://addi.ehu.es/handle/10810/65587
http://addi.ehu.es/handle/10810/59094
http://addi.ehu.es/handle/10810/60623
http://addi.ehu.es/handle/10810/59510
http://addi.ehu.es/handle/10810/66397
http://addi.ehu.es/handle/10810/62632
http://addi.ehu.es/handle/10810/60058
http://addi.ehu.es/handle/10810/64557
http://addi.ehu.es/handle/10810/66478
http://addi.ehu.es/handle/10810/66584
http://addi.ehu.es/handle/10810/65861
http://addi.ehu.es/handle/10810/61227
http://addi.ehu.es/handle/10810/59386
http://addi.ehu.es/handle/10810/57200
http://addi.ehu.es/handle/10810/62289
http://addi.ehu.es/handle/10810/60218
http://addi.ehu.es/handle/10810/60890
http://addi.ehu.es/handle/10810/60285
http://addi.ehu.es/handle/10810/57613
http://addi.ehu.es/handle/10810/60088
http://addi.ehu.es/handle/10810/58149
http://addi.ehu.es/handle/10810/61077
http://addi.ehu.es/handle/10810/66928
http://addi.ehu.es/handle/10810/63810
http://addi.ehu.es/handle/10810/65628
http://addi.ehu.es/handle/10810/66279
http://addi.ehu.es/handle/10810/65039
http://addi.ehu.es/handle/10810/59014
http://addi.ehu.es/handle/10810/67174
http://addi.ehu.es/handle/10810/59338
http://addi.ehu.es/handle/10810/63573
http://addi.ehu.es/handle/10810/62687
http://addi.ehu.es/handle/10810/60771
http://addi.ehu.es/handle/10810/63528
http://addi.ehu.es/handle/10810/60660
http://addi.ehu.es/handle/10810/64002
http://addi.ehu.es/handle/10810/64584
http://addi.ehu.es/handle/10810/63016
http://addi.ehu.es/handle/10810/63813
http://addi.ehu.es/handle/10810/63202
http://addi.ehu.es/handle/10810/59210
http://addi.ehu.es/handle/10810/57412
http://addi.ehu.es/handle/10810/62268
http://addi.ehu.es/handle/10810/61304
http://addi.ehu.es/handle/10810/60463
http://addi.ehu.es/handle/10810/61555
http://addi.ehu.es/handle/10810/57658
http://addi.ehu.es/handle/10810/64419
http://addi.ehu.es/handle/10810/64777
http://addi.ehu.es/handle/10810/65561
http://addi.ehu.es/handle/10810/60284
http://addi.ehu.es/handle/10810/66218
http://addi.ehu.es/handle/10810/58914
http://addi.ehu.es/handle/10810/62393
http://addi.ehu.es/handle/10810/58741
http://addi.ehu.es/handle/10810/65115
http://addi.ehu.es/handle/10810/60360
http://addi.ehu.es/handle/10810/58291
http://addi.ehu.es/handle/10810/61614
http://addi.ehu.es/handle/10810/57520
http://addi.ehu.es/handle/10810/66455
http://addi.ehu.es/handle/10810/66439
http://addi.ehu.es/handle/10810/60916
http://addi.ehu.es/handle/10810/59791
http://addi.ehu.es/handle/10810/67131
http://addi.ehu.es/handle/10810/60975
http://addi.ehu.es/handle/10810/64852
http://addi.ehu.es/handle/10810/59081
http://addi.ehu.es/handle/10810/65015
http://addi.ehu.es/handle/10810/57142
http://addi.ehu.es/handle/10810/63977
http://addi.ehu.es/handle/10810/67254
http://addi.ehu.es/handle/10810/58548
http://addi.ehu.es/handle/10810/62555
http://addi.ehu.es/handle/10810/66964
http://addi.ehu.es/handle/10810/66046
http://addi.ehu.es/handle/10810/59125
http://addi.ehu.es/handle/10810/67093
http://addi.ehu.es/handle/10810/58639
http://addi.ehu.es/handle/10810/57879
http://addi.ehu.es/handle/10810/57019
http://addi.ehu.es/handle/10810/57337
http://addi.ehu.es/handle/10810/65508
http://addi.ehu.es/handle/10810/57793
http://addi.ehu.es/handle/10810/65498
http://addi.ehu.es/handle/10810/61066
http://addi.ehu.es/handle/10810/62142
http://addi.ehu.es/handle/10810/67027
http://addi.ehu.es/handle/10810/61534
http://addi.ehu.es/handle/10810/57795
http://addi.ehu.es/handle/10810/61340
http://addi.ehu.es/handle/10810/66163
http://addi.ehu.es/handle/10810/65995
http://addi.ehu.es/handle/10810/66331
http://addi.ehu.es/handle/10810/59813
http://addi.ehu.es/handle/10810/60009
http://addi.ehu.es/handle/10810/62482
http://addi.ehu.es/handle/10810/59999
http://addi.ehu.es/handle/10810/59502
http://addi.ehu.es/handle/10810/61399
http://addi.ehu.es/handle/10810/63907
http://addi.ehu.es/handle/10810/61204
http://addi.ehu.es/handle/10810/66256
http://addi.ehu.es/handle/10810/66786
http://addi.ehu.es/handle/10810/65459
http://addi.ehu.es/handle/10810/66898
http://addi.ehu.es/handle/10810/62852
http://addi.ehu.es/handle/10810/58975
http://addi.ehu.es/handle/10810/62270
http://addi.ehu.es/handle/10810/67250
http://addi.ehu.es/handle/10810/59557
http://addi.ehu.es/handle/10810/60279
http://addi.ehu.es/handle/10810/60923
http://addi.ehu.es/handle/10810/62789
http://addi.ehu.es/handle/10810/63482
http://addi.ehu.es/handle/10810/58768
http://addi.ehu.es/handle/10810/57932
http://addi.ehu.es/handle/10810/58649
http://addi.ehu.es/handle/10810/64382
http://addi.ehu.es/handle/10810/66037
http://addi.ehu.es/handle/10810/64220
http://addi.ehu.es/handle/10810/65646
http://addi.ehu.es/handle/10810/58562
http://addi.ehu.es/handle/10810/59311
http://addi.ehu.es/handle/10810/61446
http://addi.ehu.es/handle/10810/59072
http://addi.ehu.es/handle/10810/57304
http://addi.ehu.es/handle/10810/57176
http://addi.ehu.es/handle/10810/62601
http://addi.ehu.es/handle/10810/61727
http://addi.ehu.es/handle/10810/63673
http://addi.ehu.es/handle/10810/65588
http://addi.ehu.es/handle/10810/64302
http://addi.ehu.es/handle/10810/60955
http://addi.ehu.es/handle/10810/65298
http://addi.ehu.es/handle/10810/60147
http://addi.ehu.es/handle/10810/60786
http://addi.ehu.es/handle/10810/65611
http://addi.ehu.es/handle/10810/67091
http://addi.ehu.es/handle/10810/67331
http://addi.ehu.es/handle/10810/60382
http://addi.ehu.es/handle/10810/66047
http://addi.ehu.es/handle/10810/64550
http://addi.ehu.es/handle/10810/59315
http://addi.ehu.es/handle/10810/61742
http://addi.ehu.es/handle/10810/57411
http://addi.ehu.es/handle/10810/57874
http://addi.ehu.es/handle/10810/62400
http://addi.ehu.es/handle/10810/65341
http://addi.ehu.es/handle/10810/63209
http://addi.ehu.es/handle/10810/63816
http://addi.ehu.es/handle/10810/66593
http://addi.ehu.es/handle/10810/65330
http://addi.ehu.es/handle/10810/64776
http://addi.ehu.es/handle/10810/63599
http://addi.ehu.es/handle/10810/66016
http://addi.ehu.es/handle/10810/57715
http://addi.ehu.es/handle/10810/66813
http://addi.ehu.es/handle/10810/59995
http://addi.ehu.es/handle/10810/65421
http://addi.ehu.es/handle/10810/59487
http://addi.ehu.es/handle/10810/65288
http://addi.ehu.es/handle/10810/64860
http://addi.ehu.es/handle/10810/66599
http://addi.ehu.es/handle/10810/65020
http://addi.ehu.es/handle/10810/66870
http://addi.ehu.es/handle/10810/64505
http://addi.ehu.es/handle/10810/59760
http://addi.ehu.es/handle/10810/62799
http://addi.ehu.es/handle/10810/60704
http://addi.ehu.es/handle/10810/65505
http://addi.ehu.es/handle/10810/60223
http://addi.ehu.es/handle/10810/63715
http://addi.ehu.es/handle/10810/60082
http://addi.ehu.es/handle/10810/64754
http://addi.ehu.es/handle/10810/59086
http://addi.ehu.es/handle/10810/60445
http://addi.ehu.es/handle/10810/64026
http://addi.ehu.es/handle/10810/62948
http://addi.ehu.es/handle/10810/61743
http://addi.ehu.es/handle/10810/66601
http://addi.ehu.es/handle/10810/65921
http://addi.ehu.es/handle/10810/62266
http://addi.ehu.es/handle/10810/58369
http://addi.ehu.es/handle/10810/66368
http://addi.ehu.es/handle/10810/66525
http://addi.ehu.es/handle/10810/66442
http://addi.ehu.es/handle/10810/60078
http://addi.ehu.es/handle/10810/60376
http://addi.ehu.es/handle/10810/58412
http://addi.ehu.es/handle/10810/65385
http://addi.ehu.es/handle/10810/63622
http://addi.ehu.es/handle/10810/58804
http://addi.ehu.es/handle/10810/64660
http://addi.ehu.es/handle/10810/64306
http://addi.ehu.es/handle/10810/61752
http://addi.ehu.es/handle/10810/60530
http://addi.ehu.es/handle/10810/61222
http://addi.ehu.es/handle/10810/60696
http://addi.ehu.es/handle/10810/61291
http://addi.ehu.es/handle/10810/63844
http://addi.ehu.es/handle/10810/59659
http://addi.ehu.es/handle/10810/59503
http://addi.ehu.es/handle/10810/58950
http://addi.ehu.es/handle/10810/63931
http://addi.ehu.es/handle/10810/62872
http://addi.ehu.es/handle/10810/63292
http://addi.ehu.es/handle/10810/60072
http://addi.ehu.es/handle/10810/57484
http://addi.ehu.es/handle/10810/64373
http://addi.ehu.es/handle/10810/57857
http://addi.ehu.es/handle/10810/66475
http://addi.ehu.es/handle/10810/58290
http://addi.ehu.es/handle/10810/61850
http://addi.ehu.es/handle/10810/59614
http://addi.ehu.es/handle/10810/66226
http://addi.ehu.es/handle/10810/61495
http://addi.ehu.es/handle/10810/62731
http://addi.ehu.es/handle/10810/61928
http://addi.ehu.es/handle/10810/64088
http://addi.ehu.es/handle/10810/61942
http://addi.ehu.es/handle/10810/58457
http://addi.ehu.es/handle/10810/59489
http://addi.ehu.es/handle/10810/61635
http://addi.ehu.es/handle/10810/60138
http://addi.ehu.es/handle/10810/66426
http://addi.ehu.es/handle/10810/58242
http://addi.ehu.es/handle/10810/57143
http://addi.ehu.es/handle/10810/61195
http://addi.ehu.es/handle/10810/61412
http://addi.ehu.es/handle/10810/62404
http://addi.ehu.es/handle/10810/64833
http://addi.ehu.es/handle/10810/65044
http://addi.ehu.es/handle/10810/62521
http://addi.ehu.es/handle/10810/60686
http://addi.ehu.es/handle/10810/65023
http://addi.ehu.es/handle/10810/61272
http://addi.ehu.es/handle/10810/57152
http://addi.ehu.es/handle/10810/59445
http://addi.ehu.es/handle/10810/67156
http://addi.ehu.es/handle/10810/57526
http://addi.ehu.es/handle/10810/58351
http://addi.ehu.es/handle/10810/59971
http://addi.ehu.es/handle/10810/57889
http://addi.ehu.es/handle/10810/67087
http://addi.ehu.es/handle/10810/59582
http://addi.ehu.es/handle/10810/61706
http://addi.ehu.es/handle/10810/58439
http://addi.ehu.es/handle/10810/64089