http://addi.ehu.es/handle/10810/24947
http://addi.ehu.es/handle/10810/24961
http://addi.ehu.es/handle/10810/24962
http://addi.ehu.es/handle/10810/24963
http://addi.ehu.es/handle/10810/25034
http://addi.ehu.es/handle/10810/25057
http://addi.ehu.es/handle/10810/25146
http://addi.ehu.es/handle/10810/25066
http://addi.ehu.es/handle/10810/25070
http://addi.ehu.es/handle/10810/25071
http://addi.ehu.es/handle/10810/25149
http://addi.ehu.es/handle/10810/25152
http://addi.ehu.es/handle/10810/25087
http://addi.ehu.es/handle/10810/25088
http://addi.ehu.es/handle/10810/25090
http://addi.ehu.es/handle/10810/26169
http://addi.ehu.es/handle/10810/25153
http://addi.ehu.es/handle/10810/25154
http://addi.ehu.es/handle/10810/25155
http://addi.ehu.es/handle/10810/25247
http://addi.ehu.es/handle/10810/26033
http://addi.ehu.es/handle/10810/25166
http://addi.ehu.es/handle/10810/25527
http://addi.ehu.es/handle/10810/25186
http://addi.ehu.es/handle/10810/25206
http://addi.ehu.es/handle/10810/25207
http://addi.ehu.es/handle/10810/25348
http://addi.ehu.es/handle/10810/25463
http://addi.ehu.es/handle/10810/25414
http://addi.ehu.es/handle/10810/25421
http://addi.ehu.es/handle/10810/25446
http://addi.ehu.es/handle/10810/25447
http://addi.ehu.es/handle/10810/25448
http://addi.ehu.es/handle/10810/26756
http://addi.ehu.es/handle/10810/25449
http://addi.ehu.es/handle/10810/25457
http://addi.ehu.es/handle/10810/25458
http://addi.ehu.es/handle/10810/25460
http://addi.ehu.es/handle/10810/25639
http://addi.ehu.es/handle/10810/25638
http://addi.ehu.es/handle/10810/26753
http://addi.ehu.es/handle/10810/26757
http://addi.ehu.es/handle/10810/25649
http://addi.ehu.es/handle/10810/25650
http://addi.ehu.es/handle/10810/25651
http://addi.ehu.es/handle/10810/25653
http://addi.ehu.es/handle/10810/25654
http://addi.ehu.es/handle/10810/26769
http://addi.ehu.es/handle/10810/26771
http://addi.ehu.es/handle/10810/25690
http://addi.ehu.es/handle/10810/25697
http://addi.ehu.es/handle/10810/25751
http://addi.ehu.es/handle/10810/25739
http://addi.ehu.es/handle/10810/26773
http://addi.ehu.es/handle/10810/25738
http://addi.ehu.es/handle/10810/25790
http://addi.ehu.es/handle/10810/25800
http://addi.ehu.es/handle/10810/25801
http://addi.ehu.es/handle/10810/26779
http://addi.ehu.es/handle/10810/26825
http://addi.ehu.es/handle/10810/25891
http://addi.ehu.es/handle/10810/26832
http://addi.ehu.es/handle/10810/26834
http://addi.ehu.es/handle/10810/25844
http://addi.ehu.es/handle/10810/25846
http://addi.ehu.es/handle/10810/25850
http://addi.ehu.es/handle/10810/25862
http://addi.ehu.es/handle/10810/25863
http://addi.ehu.es/handle/10810/25867
http://addi.ehu.es/handle/10810/25866
http://addi.ehu.es/handle/10810/25868
http://addi.ehu.es/handle/10810/25991
http://addi.ehu.es/handle/10810/25990
http://addi.ehu.es/handle/10810/26030
http://addi.ehu.es/handle/10810/25896
http://addi.ehu.es/handle/10810/26749
http://addi.ehu.es/handle/10810/26007
http://addi.ehu.es/handle/10810/26115
http://addi.ehu.es/handle/10810/25989
http://addi.ehu.es/handle/10810/25988
http://addi.ehu.es/handle/10810/25946
http://addi.ehu.es/handle/10810/25962
http://addi.ehu.es/handle/10810/26120
http://addi.ehu.es/handle/10810/26845
http://addi.ehu.es/handle/10810/26220
http://addi.ehu.es/handle/10810/26848
http://addi.ehu.es/handle/10810/26138
http://addi.ehu.es/handle/10810/25994
http://addi.ehu.es/handle/10810/26000
http://addi.ehu.es/handle/10810/26006
http://addi.ehu.es/handle/10810/26010
http://addi.ehu.es/handle/10810/26012
http://addi.ehu.es/handle/10810/26574
http://addi.ehu.es/handle/10810/26173
http://addi.ehu.es/handle/10810/26148
http://addi.ehu.es/handle/10810/26168
http://addi.ehu.es/handle/10810/26092
http://addi.ehu.es/handle/10810/26110
http://addi.ehu.es/handle/10810/26126
http://addi.ehu.es/handle/10810/26127
http://addi.ehu.es/handle/10810/26206
http://addi.ehu.es/handle/10810/26178
http://addi.ehu.es/handle/10810/26179
http://addi.ehu.es/handle/10810/26181
http://addi.ehu.es/handle/10810/26281
http://addi.ehu.es/handle/10810/26193
http://addi.ehu.es/handle/10810/26195
http://addi.ehu.es/handle/10810/26274
http://addi.ehu.es/handle/10810/26275
http://addi.ehu.es/handle/10810/26196
http://addi.ehu.es/handle/10810/26202
http://addi.ehu.es/handle/10810/26203
http://addi.ehu.es/handle/10810/26207
http://addi.ehu.es/handle/10810/26209
http://addi.ehu.es/handle/10810/26282
http://addi.ehu.es/handle/10810/26279
http://addi.ehu.es/handle/10810/26284
http://addi.ehu.es/handle/10810/26234
http://addi.ehu.es/handle/10810/26287
http://addi.ehu.es/handle/10810/26288
http://addi.ehu.es/handle/10810/26250
http://addi.ehu.es/handle/10810/31889
http://addi.ehu.es/handle/10810/26268
http://addi.ehu.es/handle/10810/26254
http://addi.ehu.es/handle/10810/26258
http://addi.ehu.es/handle/10810/24455
http://addi.ehu.es/handle/10810/24489
http://addi.ehu.es/handle/10810/24490
http://addi.ehu.es/handle/10810/24568
http://addi.ehu.es/handle/10810/24546
http://addi.ehu.es/handle/10810/25099
http://addi.ehu.es/handle/10810/24587
http://addi.ehu.es/handle/10810/24648
http://addi.ehu.es/handle/10810/25759
http://addi.ehu.es/handle/10810/24692
http://addi.ehu.es/handle/10810/24950
http://addi.ehu.es/handle/10810/24686
http://addi.ehu.es/handle/10810/24687
http://addi.ehu.es/handle/10810/24689
http://addi.ehu.es/handle/10810/24750
http://addi.ehu.es/handle/10810/24771
http://addi.ehu.es/handle/10810/24752
http://addi.ehu.es/handle/10810/25159
http://addi.ehu.es/handle/10810/24748
http://addi.ehu.es/handle/10810/25160
http://addi.ehu.es/handle/10810/24831
http://addi.ehu.es/handle/10810/24845
http://addi.ehu.es/handle/10810/24846
http://addi.ehu.es/handle/10810/24847
http://addi.ehu.es/handle/10810/24848
http://addi.ehu.es/handle/10810/24849
http://addi.ehu.es/handle/10810/24851
http://addi.ehu.es/handle/10810/24854
http://addi.ehu.es/handle/10810/24855
http://addi.ehu.es/handle/10810/24867
http://addi.ehu.es/handle/10810/24869
http://addi.ehu.es/handle/10810/24886
http://addi.ehu.es/handle/10810/24887
http://addi.ehu.es/handle/10810/24888
http://addi.ehu.es/handle/10810/24891
http://addi.ehu.es/handle/10810/24899
http://addi.ehu.es/handle/10810/25274
http://addi.ehu.es/handle/10810/26032
http://addi.ehu.es/handle/10810/25317
http://addi.ehu.es/handle/10810/25408
http://addi.ehu.es/handle/10810/25427
http://addi.ehu.es/handle/10810/25444
http://addi.ehu.es/handle/10810/25456
http://addi.ehu.es/handle/10810/25641
http://addi.ehu.es/handle/10810/25640
http://addi.ehu.es/handle/10810/25566
http://addi.ehu.es/handle/10810/65328
http://addi.ehu.es/handle/10810/25549
http://addi.ehu.es/handle/10810/25577
http://addi.ehu.es/handle/10810/25578
http://addi.ehu.es/handle/10810/25643
http://addi.ehu.es/handle/10810/26751
http://addi.ehu.es/handle/10810/26754
http://addi.ehu.es/handle/10810/26755
http://addi.ehu.es/handle/10810/26772
http://addi.ehu.es/handle/10810/25668
http://addi.ehu.es/handle/10810/25667
http://addi.ehu.es/handle/10810/25701
http://addi.ehu.es/handle/10810/25704
http://addi.ehu.es/handle/10810/25705
http://addi.ehu.es/handle/10810/26499
http://addi.ehu.es/handle/10810/25731
http://addi.ehu.es/handle/10810/25838
http://addi.ehu.es/handle/10810/25734
http://addi.ehu.es/handle/10810/25736
http://addi.ehu.es/handle/10810/25737
http://addi.ehu.es/handle/10810/25752
http://addi.ehu.es/handle/10810/25746
http://addi.ehu.es/handle/10810/25747
http://addi.ehu.es/handle/10810/25748
http://addi.ehu.es/handle/10810/25756
http://addi.ehu.es/handle/10810/25828
http://addi.ehu.es/handle/10810/25780
http://addi.ehu.es/handle/10810/25791
http://addi.ehu.es/handle/10810/25789
http://addi.ehu.es/handle/10810/25792
http://addi.ehu.es/handle/10810/26775
http://addi.ehu.es/handle/10810/25795
http://addi.ehu.es/handle/10810/25797
http://addi.ehu.es/handle/10810/25798
http://addi.ehu.es/handle/10810/25802
http://addi.ehu.es/handle/10810/25803
http://addi.ehu.es/handle/10810/26778
http://addi.ehu.es/handle/10810/25806
http://addi.ehu.es/handle/10810/26222
http://addi.ehu.es/handle/10810/26224
http://addi.ehu.es/handle/10810/26225
http://addi.ehu.es/handle/10810/26227
http://addi.ehu.es/handle/10810/26174
http://addi.ehu.es/handle/10810/26187
http://addi.ehu.es/handle/10810/26270
http://addi.ehu.es/handle/10810/26176
http://addi.ehu.es/handle/10810/26175
http://addi.ehu.es/handle/10810/26267
http://addi.ehu.es/handle/10810/26295
http://addi.ehu.es/handle/10810/26306
http://addi.ehu.es/handle/10810/26407
http://addi.ehu.es/handle/10810/26331
http://addi.ehu.es/handle/10810/27134
http://addi.ehu.es/handle/10810/26351
http://addi.ehu.es/handle/10810/26373
http://addi.ehu.es/handle/10810/26375
http://addi.ehu.es/handle/10810/26377
http://addi.ehu.es/handle/10810/26378
http://addi.ehu.es/handle/10810/26380
http://addi.ehu.es/handle/10810/26382
http://addi.ehu.es/handle/10810/26383
http://addi.ehu.es/handle/10810/26386
http://addi.ehu.es/handle/10810/26391
http://addi.ehu.es/handle/10810/26392
http://addi.ehu.es/handle/10810/26498
http://addi.ehu.es/handle/10810/26496
http://addi.ehu.es/handle/10810/26495
http://addi.ehu.es/handle/10810/26410
http://addi.ehu.es/handle/10810/26411
http://addi.ehu.es/handle/10810/26414
http://addi.ehu.es/handle/10810/26416
http://addi.ehu.es/handle/10810/26417
http://addi.ehu.es/handle/10810/26420
http://addi.ehu.es/handle/10810/26428
http://addi.ehu.es/handle/10810/26429
http://addi.ehu.es/handle/10810/26635
http://addi.ehu.es/handle/10810/26441
http://addi.ehu.es/handle/10810/26442
http://addi.ehu.es/handle/10810/26445
http://addi.ehu.es/handle/10810/26446
http://addi.ehu.es/handle/10810/26462
http://addi.ehu.es/handle/10810/26470
http://addi.ehu.es/handle/10810/26548
http://addi.ehu.es/handle/10810/26491
http://addi.ehu.es/handle/10810/26540
http://addi.ehu.es/handle/10810/26512
http://addi.ehu.es/handle/10810/26539
http://addi.ehu.es/handle/10810/26516
http://addi.ehu.es/handle/10810/26531
http://addi.ehu.es/handle/10810/26544
http://addi.ehu.es/handle/10810/26520
http://addi.ehu.es/handle/10810/26549
http://addi.ehu.es/handle/10810/26532
http://addi.ehu.es/handle/10810/26534
http://addi.ehu.es/handle/10810/26590
http://addi.ehu.es/handle/10810/26790
http://addi.ehu.es/handle/10810/26810
http://addi.ehu.es/handle/10810/27190
http://addi.ehu.es/handle/10810/27191
http://addi.ehu.es/handle/10810/27195
http://addi.ehu.es/handle/10810/27203
http://addi.ehu.es/handle/10810/27204
http://addi.ehu.es/handle/10810/27206
http://addi.ehu.es/handle/10810/27208
http://addi.ehu.es/handle/10810/27210
http://addi.ehu.es/handle/10810/27211
http://addi.ehu.es/handle/10810/27212
http://addi.ehu.es/handle/10810/27213
http://addi.ehu.es/handle/10810/27214
http://addi.ehu.es/handle/10810/27215
http://addi.ehu.es/handle/10810/27217
http://addi.ehu.es/handle/10810/27219
http://addi.ehu.es/handle/10810/27220
http://addi.ehu.es/handle/10810/27221
http://addi.ehu.es/handle/10810/27224
http://addi.ehu.es/handle/10810/27227
http://addi.ehu.es/handle/10810/27229
http://addi.ehu.es/handle/10810/27236
http://addi.ehu.es/handle/10810/27237
http://addi.ehu.es/handle/10810/26633
http://addi.ehu.es/handle/10810/26674
http://addi.ehu.es/handle/10810/26650
http://addi.ehu.es/handle/10810/26675
http://addi.ehu.es/handle/10810/27455
http://addi.ehu.es/handle/10810/27466
http://addi.ehu.es/handle/10810/27472
http://addi.ehu.es/handle/10810/27474
http://addi.ehu.es/handle/10810/27480
http://addi.ehu.es/handle/10810/27487
http://addi.ehu.es/handle/10810/27488
http://addi.ehu.es/handle/10810/27489
http://addi.ehu.es/handle/10810/27491
http://addi.ehu.es/handle/10810/27579
http://addi.ehu.es/handle/10810/26649
http://addi.ehu.es/handle/10810/26651
http://addi.ehu.es/handle/10810/26656
http://addi.ehu.es/handle/10810/26658
http://addi.ehu.es/handle/10810/26677
http://addi.ehu.es/handle/10810/26697
http://addi.ehu.es/handle/10810/26678
http://addi.ehu.es/handle/10810/26699
http://addi.ehu.es/handle/10810/26669
http://addi.ehu.es/handle/10810/26679
http://addi.ehu.es/handle/10810/24896
http://addi.ehu.es/handle/10810/24897
http://addi.ehu.es/handle/10810/24898
http://addi.ehu.es/handle/10810/24948
http://addi.ehu.es/handle/10810/24965
http://addi.ehu.es/handle/10810/25051
http://addi.ehu.es/handle/10810/25037
http://addi.ehu.es/handle/10810/25033
http://addi.ehu.es/handle/10810/25039
http://addi.ehu.es/handle/10810/25049
http://addi.ehu.es/handle/10810/25072
http://addi.ehu.es/handle/10810/25073
http://addi.ehu.es/handle/10810/25074
http://addi.ehu.es/handle/10810/25147
http://addi.ehu.es/handle/10810/25068
http://addi.ehu.es/handle/10810/26610
http://addi.ehu.es/handle/10810/25426
http://addi.ehu.es/handle/10810/25098
http://addi.ehu.es/handle/10810/25097
http://addi.ehu.es/handle/10810/25190
http://addi.ehu.es/handle/10810/26034
http://addi.ehu.es/handle/10810/25188
http://addi.ehu.es/handle/10810/25308
http://addi.ehu.es/handle/10810/25445
http://addi.ehu.es/handle/10810/26761
http://addi.ehu.es/handle/10810/25526
http://addi.ehu.es/handle/10810/25575
http://addi.ehu.es/handle/10810/26709
http://addi.ehu.es/handle/10810/26762
http://addi.ehu.es/handle/10810/25655
http://addi.ehu.es/handle/10810/25699
http://addi.ehu.es/handle/10810/25702
http://addi.ehu.es/handle/10810/25707
http://addi.ehu.es/handle/10810/25713
http://addi.ehu.es/handle/10810/25732
http://addi.ehu.es/handle/10810/25733
http://addi.ehu.es/handle/10810/25735
http://addi.ehu.es/handle/10810/25837
http://addi.ehu.es/handle/10810/26774
http://addi.ehu.es/handle/10810/25757
http://addi.ehu.es/handle/10810/25767
http://addi.ehu.es/handle/10810/25769
http://addi.ehu.es/handle/10810/25776
http://addi.ehu.es/handle/10810/25833
http://addi.ehu.es/handle/10810/25771
http://addi.ehu.es/handle/10810/25783
http://addi.ehu.es/handle/10810/25787
http://addi.ehu.es/handle/10810/25793
http://addi.ehu.es/handle/10810/25794
http://addi.ehu.es/handle/10810/26822
http://addi.ehu.es/handle/10810/26823
http://addi.ehu.es/handle/10810/25895
http://addi.ehu.es/handle/10810/25839
http://addi.ehu.es/handle/10810/26826
http://addi.ehu.es/handle/10810/26828
http://addi.ehu.es/handle/10810/26829
http://addi.ehu.es/handle/10810/26830
http://addi.ehu.es/handle/10810/26831
http://addi.ehu.es/handle/10810/25840
http://addi.ehu.es/handle/10810/25841
http://addi.ehu.es/handle/10810/25842
http://addi.ehu.es/handle/10810/25854
http://addi.ehu.es/handle/10810/25859
http://addi.ehu.es/handle/10810/25860
http://addi.ehu.es/handle/10810/25864
http://addi.ehu.es/handle/10810/25886
http://addi.ehu.es/handle/10810/25887
http://addi.ehu.es/handle/10810/25888
http://addi.ehu.es/handle/10810/25889
http://addi.ehu.es/handle/10810/25892
http://addi.ehu.es/handle/10810/25894
http://addi.ehu.es/handle/10810/26839
http://addi.ehu.es/handle/10810/25902
http://addi.ehu.es/handle/10810/25905
http://addi.ehu.es/handle/10810/25912
http://addi.ehu.es/handle/10810/25917
http://addi.ehu.es/handle/10810/25919
http://addi.ehu.es/handle/10810/25949
http://addi.ehu.es/handle/10810/25951
http://addi.ehu.es/handle/10810/25986
http://addi.ehu.es/handle/10810/25959
http://addi.ehu.es/handle/10810/25960
http://addi.ehu.es/handle/10810/25961
http://addi.ehu.es/handle/10810/26842
http://addi.ehu.es/handle/10810/26843
http://addi.ehu.es/handle/10810/26872
http://addi.ehu.es/handle/10810/26131
http://addi.ehu.es/handle/10810/26116
http://addi.ehu.es/handle/10810/26146
http://addi.ehu.es/handle/10810/26217
http://addi.ehu.es/handle/10810/26061
http://addi.ehu.es/handle/10810/26346
http://addi.ehu.es/handle/10810/26348
http://addi.ehu.es/handle/10810/26008
http://addi.ehu.es/handle/10810/26009
http://addi.ehu.es/handle/10810/26013
http://addi.ehu.es/handle/10810/26011
http://addi.ehu.es/handle/10810/26149
http://addi.ehu.es/handle/10810/26151
http://addi.ehu.es/handle/10810/26139
http://addi.ehu.es/handle/10810/26152
http://addi.ehu.es/handle/10810/26153
http://addi.ehu.es/handle/10810/26112
http://addi.ehu.es/handle/10810/26087
http://addi.ehu.es/handle/10810/26089
http://addi.ehu.es/handle/10810/26090
http://addi.ehu.es/handle/10810/26578
http://addi.ehu.es/handle/10810/26128
http://addi.ehu.es/handle/10810/26129
http://addi.ehu.es/handle/10810/26142
http://addi.ehu.es/handle/10810/26226
http://addi.ehu.es/handle/10810/26154
http://addi.ehu.es/handle/10810/26155
http://addi.ehu.es/handle/10810/26211
http://addi.ehu.es/handle/10810/26212
http://addi.ehu.es/handle/10810/26170
http://addi.ehu.es/handle/10810/26171
http://addi.ehu.es/handle/10810/26280
http://addi.ehu.es/handle/10810/26180
http://addi.ehu.es/handle/10810/26189
http://addi.ehu.es/handle/10810/26229
http://addi.ehu.es/handle/10810/26190
http://addi.ehu.es/handle/10810/26204
http://addi.ehu.es/handle/10810/26208
http://addi.ehu.es/handle/10810/26230
http://addi.ehu.es/handle/10810/26290
http://addi.ehu.es/handle/10810/26249
http://addi.ehu.es/handle/10810/26320
http://addi.ehu.es/handle/10810/26252
http://addi.ehu.es/handle/10810/26253
http://addi.ehu.es/handle/10810/26266
http://addi.ehu.es/handle/10810/26308
http://addi.ehu.es/handle/10810/26310
http://addi.ehu.es/handle/10810/26311
http://addi.ehu.es/handle/10810/26293
http://addi.ehu.es/handle/10810/26296
http://addi.ehu.es/handle/10810/26319
http://addi.ehu.es/handle/10810/26329
http://addi.ehu.es/handle/10810/26333
http://addi.ehu.es/handle/10810/26334
http://addi.ehu.es/handle/10810/26356
http://addi.ehu.es/handle/10810/26359
http://addi.ehu.es/handle/10810/26364
http://addi.ehu.es/handle/10810/26360
http://addi.ehu.es/handle/10810/26365
http://addi.ehu.es/handle/10810/26367
http://addi.ehu.es/handle/10810/26368
http://addi.ehu.es/handle/10810/26370
http://addi.ehu.es/handle/10810/26384
http://addi.ehu.es/handle/10810/26387
http://addi.ehu.es/handle/10810/26388
http://addi.ehu.es/handle/10810/26389
http://addi.ehu.es/handle/10810/26494
http://addi.ehu.es/handle/10810/26448
http://addi.ehu.es/handle/10810/26449
http://addi.ehu.es/handle/10810/26452
http://addi.ehu.es/handle/10810/26453
http://addi.ehu.es/handle/10810/26454
http://addi.ehu.es/handle/10810/26459
http://addi.ehu.es/handle/10810/26460
http://addi.ehu.es/handle/10810/26461
http://addi.ehu.es/handle/10810/26463
http://addi.ehu.es/handle/10810/26714
http://addi.ehu.es/handle/10810/26465
http://addi.ehu.es/handle/10810/26466
http://addi.ehu.es/handle/10810/26467
http://addi.ehu.es/handle/10810/26468
http://addi.ehu.es/handle/10810/26469
http://addi.ehu.es/handle/10810/26547
http://addi.ehu.es/handle/10810/26511
http://addi.ehu.es/handle/10810/26542
http://addi.ehu.es/handle/10810/26514
http://addi.ehu.es/handle/10810/26543
http://addi.ehu.es/handle/10810/26593
http://addi.ehu.es/handle/10810/26634
http://addi.ehu.es/handle/10810/26530
http://addi.ehu.es/handle/10810/26551
http://addi.ehu.es/handle/10810/26556
http://addi.ehu.es/handle/10810/26557
http://addi.ehu.es/handle/10810/26573
http://addi.ehu.es/handle/10810/26571
http://addi.ehu.es/handle/10810/26585
http://addi.ehu.es/handle/10810/27209
http://addi.ehu.es/handle/10810/66975
http://addi.ehu.es/handle/10810/26955
http://addi.ehu.es/handle/10810/26956
http://addi.ehu.es/handle/10810/26594
http://addi.ehu.es/handle/10810/26713
http://addi.ehu.es/handle/10810/24747
http://addi.ehu.es/handle/10810/24668
http://addi.ehu.es/handle/10810/24670
http://addi.ehu.es/handle/10810/25290
http://addi.ehu.es/handle/10810/25900
http://addi.ehu.es/handle/10810/25189
http://addi.ehu.es/handle/10810/25388
http://addi.ehu.es/handle/10810/25387
http://addi.ehu.es/handle/10810/25409
http://addi.ehu.es/handle/10810/25461
http://addi.ehu.es/handle/10810/45963
http://addi.ehu.es/handle/10810/25433
http://addi.ehu.es/handle/10810/25587