http://authorities.loc.gov/ 12/09/12: (mezzo-soprana D.; rems.)

http://en.wikipedia.org/wiki/Tatiana_Troyanos 12/09/12: (mezzo- soprana americana de origem grega; D.; )

http://catalogue.bnf.fr/ 12/09/12

http://catalogo.bnportugal.pt/ 12/09/12