found: Its Gustav Mahler u. seine Zeit, 1960.
found: Paris 1960-1980, 1982:t.p. (Wiener Festwochen)
found: Scheit, K. The Italian guitar [SR] p1988:labels (Vienna Festival)
found: Goertz, H. Österreichisches Musikhandbuch:p. 163 (Wiener Festwochen; held annually from the end of May to the end of June)
found: Vienna : Jews and the city of music, 1870-1938, 2004:t.p. verso (Vienna International Festival; Wiener Festwochen)
found: Wiener Festwochen WWW site, accessed Aug. 20, 2014www.festwochen.at/en/(Wiener Festwochen, established 1951, Vienna, Austria)
