Fonte positiva dos dados

Sec. de: Schumann, Robert. Carnaval, op. 9, scénes mignonnes sur quatre notes : Kinderszenen = Cenas infantis op. 15 (Disco). [19--]

http://authorities.loc.gov 13/07/2018: (pianista austríaca ; d.n.)

http://catalogue.bnf.fr: (d.n.: 20/06/1929 ; pianista austríaca)

http://www.bach-cantatas.com/Bio/Haebler-Ingrid.htm: (d.n.: 20/06/1929 ; pianista austríaca)

https://www.onb.ac.at/en/: (d.n.: 1926)