LC data base, Mar.16, 1987 : (hdg.: Fuchs, Klaus Emil Julius, 1911- ; usage: Klaus Fuchs)
Encyc. Britannica. Micropedia, 1975|b(Fuchs, Klaus Emil Julius, 1911- )
aWikipedia, June 4, 2008|b(Klaus Emil Julius Fuchs; b.Dec. 29, 1911; d. Jan. 28, 1988; German-born theoretical physicist and atomic spy who was convicted of supplying information on the British and American atomic bomb research to the USSR during, and shortly after, World War II)