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Contemporary Music Centre (Ireland) [2014-05-20]
G. Schirmer [2011-04-21]
Quartet No. 8 is for violin, viola, cello, and string bass.
Additional residences to be determined
Otto Klemperer Archive, Library of Congress [2011-12-28]
Lived both in Denmark and outside it in the 1920s, in the 1930s in both Austria and Germany.
Zentralbibliothek Zürich, Nachlassverzeichnis Paul Kletzki [2014-05-22]
Большая биографическая энциклопедия [2013-12-28]