http://es.wikipedia.org/wiki/Astrid_Varnay

WWW.wikipedia.org, 05-09-2006---(Varnay, Astrid; (April 25, 1918-September 4, 2006) was a Hungarian-American soprano, who was born in Sweden and died in Germany)

Großes Sängerlexikon, de K.J. Kutsch y Leo Riemens, 1997---(Varnay, Astrid; n. 1918, Stockholm; sopran)

La walkyria, 1955---etiqueta del disco (Astrid Varnay)