• https://addi.ehu.es/handle/10810/34751
• https://addi.ehu.es/handle/10810/34752
• https://addi.ehu.es/handle/10810/34760
• https://addi.ehu.es/handle/10810/34761
• https://addi.ehu.es/handle/10810/34762
• https://addi.ehu.es/handle/10810/34763
• https://addi.ehu.es/handle/10810/34764
• https://addi.ehu.es/handle/10810/34806
• https://addi.ehu.es/handle/10810/34823
• https://addi.ehu.es/handle/10810/34831
• https://addi.ehu.es/handle/10810/34828
• https://addi.ehu.es/handle/10810/34836
• https://addi.ehu.es/handle/10810/34840
• https://addi.ehu.es/handle/10810/34843
• https://addi.ehu.es/handle/10810/34845
• https://addi.ehu.es/handle/10810/34846
• https://addi.ehu.es/handle/10810/34849