1
Argitaratua 1990
Full text available from Criminal Justice Database: 11/01/1997 to 07/31/2000
Government Document Baliabide elektronikoa Aldizkako argitalpena
5
Full text available from Accounting & Tax Database: 03/01/1993 to 03/31/1993
Government Document Baliabide elektronikoa Aldizkako argitalpena
8
Argitaratua 2000
Available in Fuente Académica Plus.
Government Document Baliabide elektronikoa Aldizkako argitalpena