55
Argitaratua 1999
Full text available from Accounting & Tax Database: 08/01/2006 to present
Baliabide elektronikoa Aldizkaria
57
Argitaratua 1998
Full text available from Accounting & Tax Database: 09/01/2006 to 11/30/2010
Baliabide elektronikoa Aldizkaria
60
Full text available from Research Library: 07/01/2007 to present
Baliabide elektronikoa Aldizkaria