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/10810/68929
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/10810/68407
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/10810/68417
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/10810/68493
http://addi.ehu.es/handle/10810/64002
http://addi.ehu.es/handle/10810/64584
http://addi.ehu.es/handle/10810/68663
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/10810/68613
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/10810/69466
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/10810/67770
http://addi.ehu.es/handle/10810/67093
http://addi.ehu.es/handle/10810/68125
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/10810/67538
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/10810/67840
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/10810/68151
http://addi.ehu.es/handle/10810/60009
http://addi.ehu.es/handle/10810/69071
http://addi.ehu.es/handle/10810/67589
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/10810/67592
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/10810/68423
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/10810/69433
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/10810/67536
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/10810/68393
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/10810/68736
http://addi.ehu.es/handle/10810/57411
http://addi.ehu.es/handle/10810/67978
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/10810/69340
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/10810/69331
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/10810/68746
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/10810/68253
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/10810/69389
http://addi.ehu.es/handle/10810/66601
http://addi.ehu.es/handle/10810/65921
http://addi.ehu.es/handle/10810/67820
http://addi.ehu.es/handle/10810/67779
http://addi.ehu.es/handle/10810/68065
http://addi.ehu.es/handle/10810/62266
http://addi.ehu.es/handle/10810/67953
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/10810/67556
http://addi.ehu.es/handle/10810/68230
http://addi.ehu.es/handle/10810/69259
http://addi.ehu.es/handle/10810/63931
http://addi.ehu.es/handle/10810/62872
http://addi.ehu.es/handle/10810/67845
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/10810/67595
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/10810/69234
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/10810/68659
http://addi.ehu.es/handle/10810/68244
http://addi.ehu.es/handle/10810/57526
http://addi.ehu.es/handle/10810/68713
http://addi.ehu.es/handle/10810/67575
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
http://addi.ehu.es/handle/10810/63106
http://addi.ehu.es/handle/10810/60918
http://addi.ehu.es/handle/10810/69264
http://addi.ehu.es/handle/10810/60758
http://addi.ehu.es/handle/10810/60516
http://addi.ehu.es/handle/10810/58514
http://addi.ehu.es/handle/10810/60680
http://addi.ehu.es/handle/10810/65454
http://addi.ehu.es/handle/10810/62557
http://addi.ehu.es/handle/10810/66668
http://addi.ehu.es/handle/10810/64316
http://addi.ehu.es/handle/10810/58097
http://addi.ehu.es/handle/10810/64672
http://addi.ehu.es/handle/10810/59467
http://addi.ehu.es/handle/10810/58618
http://addi.ehu.es/handle/10810/58076
http://addi.ehu.es/handle/10810/60168
http://addi.ehu.es/handle/10810/67528
http://addi.ehu.es/handle/10810/65281
http://addi.ehu.es/handle/10810/66101
http://addi.ehu.es/handle/10810/59444
http://addi.ehu.es/handle/10810/59436
http://addi.ehu.es/handle/10810/68232
http://addi.ehu.es/handle/10810/67209
http://addi.ehu.es/handle/10810/68247
http://addi.ehu.es/handle/10810/58637
http://addi.ehu.es/handle/10810/62428
http://addi.ehu.es/handle/10810/64304
http://addi.ehu.es/handle/10810/68342
http://addi.ehu.es/handle/10810/65918
http://addi.ehu.es/handle/10810/64403
http://addi.ehu.es/handle/10810/64400
http://addi.ehu.es/handle/10810/62473
http://addi.ehu.es/handle/10810/67153
http://addi.ehu.es/handle/10810/58246
http://addi.ehu.es/handle/10810/60366
http://addi.ehu.es/handle/10810/66908
http://addi.ehu.es/handle/10810/63854
http://addi.ehu.es/handle/10810/59134
http://addi.ehu.es/handle/10810/63509
http://addi.ehu.es/handle/10810/69000
http://addi.ehu.es/handle/10810/59361
http://addi.ehu.es/handle/10810/57938
http://addi.ehu.es/handle/10810/59005
http://addi.ehu.es/handle/10810/63761
http://addi.ehu.es/handle/10810/65028
http://addi.ehu.es/handle/10810/68291
http://addi.ehu.es/handle/10810/59828
http://addi.ehu.es/handle/10810/63230
http://addi.ehu.es/handle/10810/58519
http://addi.ehu.es/handle/10810/61182
http://addi.ehu.es/handle/10810/64925
http://addi.ehu.es/handle/10810/64497
http://addi.ehu.es/handle/10810/64098
http://addi.ehu.es/handle/10810/66806
http://addi.ehu.es/handle/10810/62736
http://addi.ehu.es/handle/10810/66597
http://addi.ehu.es/handle/10810/61657
http://addi.ehu.es/handle/10810/57123
http://addi.ehu.es/handle/10810/62416
http://addi.ehu.es/handle/10810/69348
http://addi.ehu.es/handle/10810/61429
http://addi.ehu.es/handle/10810/57566
http://addi.ehu.es/handle/10810/64926
http://addi.ehu.es/handle/10810/67407
http://addi.ehu.es/handle/10810/59526
http://addi.ehu.es/handle/10810/63431
http://addi.ehu.es/handle/10810/69070
http://addi.ehu.es/handle/10810/66567
http://addi.ehu.es/handle/10810/59066
http://addi.ehu.es/handle/10810/60219
http://addi.ehu.es/handle/10810/62299
http://addi.ehu.es/handle/10810/58057
http://addi.ehu.es/handle/10810/62283
http://addi.ehu.es/handle/10810/67139
http://addi.ehu.es/handle/10810/63926
http://addi.ehu.es/handle/10810/57398
http://addi.ehu.es/handle/10810/58941
http://addi.ehu.es/handle/10810/67288
http://addi.ehu.es/handle/10810/60022
http://addi.ehu.es/handle/10810/65474
http://addi.ehu.es/handle/10810/65727
http://addi.ehu.es/handle/10810/59225
http://addi.ehu.es/handle/10810/60730
http://addi.ehu.es/handle/10810/64936
http://addi.ehu.es/handle/10810/59088
http://addi.ehu.es/handle/10810/68140
http://addi.ehu.es/handle/10810/60351
http://addi.ehu.es/handle/10810/56964
http://addi.ehu.es/handle/10810/64986
http://addi.ehu.es/handle/10810/57299
http://addi.ehu.es/handle/10810/61145
http://addi.ehu.es/handle/10810/67049
http://addi.ehu.es/handle/10810/62776
http://addi.ehu.es/handle/10810/59276
http://addi.ehu.es/handle/10810/67714
http://addi.ehu.es/handle/10810/64207
http://addi.ehu.es/handle/10810/60853
http://addi.ehu.es/handle/10810/64381
http://addi.ehu.es/handle/10810/62614
http://addi.ehu.es/handle/10810/66817
http://addi.ehu.es/handle/10810/58913
http://addi.ehu.es/handle/10810/67982
http://addi.ehu.es/handle/10810/65407
http://addi.ehu.es/handle/10810/58280
http://addi.ehu.es/handle/10810/57699
http://addi.ehu.es/handle/10810/59672
http://addi.ehu.es/handle/10810/63176
http://addi.ehu.es/handle/10810/64059
http://addi.ehu.es/handle/10810/65196
http://addi.ehu.es/handle/10810/62402
http://addi.ehu.es/handle/10810/63355
http://addi.ehu.es/handle/10810/66232
http://addi.ehu.es/handle/10810/59499
http://addi.ehu.es/handle/10810/67374
http://addi.ehu.es/handle/10810/68972
http://addi.ehu.es/handle/10810/67114
http://addi.ehu.es/handle/10810/66209
http://addi.ehu.es/handle/10810/68436
http://addi.ehu.es/handle/10810/67206
http://addi.ehu.es/handle/10810/67601
http://addi.ehu.es/handle/10810/67143
http://addi.ehu.es/handle/10810/67951
http://addi.ehu.es/handle/10810/64838
http://addi.ehu.es/handle/10810/61571
http://addi.ehu.es/handle/10810/64460
http://addi.ehu.es/handle/10810/57794
http://addi.ehu.es/handle/10810/65852
http://addi.ehu.es/handle/10810/58632
http://addi.ehu.es/handle/10810/60534
http://addi.ehu.es/handle/10810/58811
http://addi.ehu.es/handle/10810/64327
http://addi.ehu.es/handle/10810/62216
http://addi.ehu.es/handle/10810/65725
http://addi.ehu.es/handle/10810/65495
http://addi.ehu.es/handle/10810/65267
http://addi.ehu.es/handle/10810/65252
http://addi.ehu.es/handle/10810/65788
http://addi.ehu.es/handle/10810/65969
http://addi.ehu.es/handle/10810/58783
http://addi.ehu.es/handle/10810/64386
http://addi.ehu.es/handle/10810/66793
http://addi.ehu.es/handle/10810/65353
http://addi.ehu.es/handle/10810/65182
http://addi.ehu.es/handle/10810/57730
http://addi.ehu.es/handle/10810/68114
http://addi.ehu.es/handle/10810/66165
http://addi.ehu.es/handle/10810/57160
http://addi.ehu.es/handle/10810/62584
http://addi.ehu.es/handle/10810/59346
http://addi.ehu.es/handle/10810/67146
http://addi.ehu.es/handle/10810/65654
http://addi.ehu.es/handle/10810/66590
http://addi.ehu.es/handle/10810/61367
http://addi.ehu.es/handle/10810/59137
http://addi.ehu.es/handle/10810/57908
http://addi.ehu.es/handle/10810/57522
http://addi.ehu.es/handle/10810/59871
http://addi.ehu.es/handle/10810/58184
http://addi.ehu.es/handle/10810/62502
http://addi.ehu.es/handle/10810/60759
http://addi.ehu.es/handle/10810/68996
http://addi.ehu.es/handle/10810/64174
http://addi.ehu.es/handle/10810/61161
http://addi.ehu.es/handle/10810/63539
http://addi.ehu.es/handle/10810/63672
http://addi.ehu.es/handle/10810/64179
http://addi.ehu.es/handle/10810/58627
http://addi.ehu.es/handle/10810/66130
http://addi.ehu.es/handle/10810/67673
http://addi.ehu.es/handle/10810/63664
http://addi.ehu.es/handle/10810/58943
http://addi.ehu.es/handle/10810/65343
http://addi.ehu.es/handle/10810/64205
http://addi.ehu.es/handle/10810/58127
http://addi.ehu.es/handle/10810/59787
http://addi.ehu.es/handle/10810/67175
http://addi.ehu.es/handle/10810/61851
http://addi.ehu.es/handle/10810/66190
http://addi.ehu.es/handle/10810/65212
http://addi.ehu.es/handle/10810/66930
http://addi.ehu.es/handle/10810/58494
http://addi.ehu.es/handle/10810/68471
http://addi.ehu.es/handle/10810/61748
http://addi.ehu.es/handle/10810/63087
http://addi.ehu.es/handle/10810/64078
http://addi.ehu.es/handle/10810/69243
http://addi.ehu.es/handle/10810/64500
http://addi.ehu.es/handle/10810/58459
http://addi.ehu.es/handle/10810/58061
http://addi.ehu.es/handle/10810/59323
http://addi.ehu.es/handle/10810/62792
http://addi.ehu.es/handle/10810/57151
http://addi.ehu.es/handle/10810/61669
http://addi.ehu.es/handle/10810/63628
http://addi.ehu.es/handle/10810/62769
http://addi.ehu.es/handle/10810/59894
http://addi.ehu.es/handle/10810/60184
http://addi.ehu.es/handle/10810/57935
http://addi.ehu.es/handle/10810/63109
http://addi.ehu.es/handle/10810/59298
http://addi.ehu.es/handle/10810/59060
http://addi.ehu.es/handle/10810/65291
http://addi.ehu.es/handle/10810/62487
http://addi.ehu.es/handle/10810/59734
http://addi.ehu.es/handle/10810/60541
http://addi.ehu.es/handle/10810/58392
http://addi.ehu.es/handle/10810/58043
http://addi.ehu.es/handle/10810/66703
http://addi.ehu.es/handle/10810/66107
http://addi.ehu.es/handle/10810/58907
http://addi.ehu.es/handle/10810/67459
http://addi.ehu.es/handle/10810/63867
http://addi.ehu.es/handle/10810/63933
http://addi.ehu.es/handle/10810/63793
http://addi.ehu.es/handle/10810/62127
http://addi.ehu.es/handle/10810/66672
http://addi.ehu.es/handle/10810/63024
http://addi.ehu.es/handle/10810/59062
http://addi.ehu.es/handle/10810/58883
http://addi.ehu.es/handle/10810/66260
http://addi.ehu.es/handle/10810/66388
http://addi.ehu.es/handle/10810/64451
http://addi.ehu.es/handle/10810/64439
http://addi.ehu.es/handle/10810/57068
http://addi.ehu.es/handle/10810/60361
http://addi.ehu.es/handle/10810/60694
http://addi.ehu.es/handle/10810/57916