found: Kopelʹman, S. I︠U︡ng--znachit molodai︠a︡, 1987, c1986:p. 9 (Khai︠a︡-Risi︠a︡ Shpikolit︠s︡er, Jewish actress who used the stage name Klara I︠U︡ng) p. 60 (Klara Young)
found: Institut zur Erforschung der UdSSR. Who was who in the USSR, 1972:p. 616 (Yung, Klara Markovna, 1883-1952, operetta and variety singer, lived in North America and performed with touring Jewish groups, in 1934 became a Soviet citizen, directed Jewish variety company)
notfound: Bolʹsh. sov. ėnt︠s︡ikl., 3rd ed.;Muzykalʹnai︠a︡ ėnt︠s︡ikl., 1973-1982.
