E. Maul y R. Eibach. «Vitis International Variety Catalogue». Information and Coordination Centre for Biological Diversity (IBV) of the Federal Agency for Agriculture and Food (BLE), Deichmanns Aue 29, 53179 Bonn, Alemania, Juny 1999. Arxivat de l'original el 2007-04-11. [Consulta: 16 juny 2007].
E. Maul y R. Eibach. «Vitis International Variety Catalogue». Information and Coordination Centre for Biological Diversity (IBV) of the Federal Agency for Agriculture and Food (BLE), Deichmanns Aue 29, 53179 Bonn, Alemania, Juny 1999. Arxivat de l'original el 2007-04-11. [Consulta: 16 juny 2007].