1
Foilsithe 1989
Full text available from Earth, Atmospheric & Aquatic Science Database: 01/01/1998 to present
Leictreonach Sraithchlár
3
le Ramos Muñoz, José.
Foilsithe 1999
Digitalia Hispánica
Leictreonach ríomhLeabhar
4
Foilsithe 1991
Available in Fuente Académica Plus.
Leictreonach Sraithchlár