found: Brahms, J. Hungarian dance no. 4, in B minor [SR], [1924]:label (Boris Zakharoff, piano)
found: The recorded violin, v. 2 [SR], p1990 :notes (Cecilia Hansen married the pianist Boris Zakharov, a friend of Prokofiev and a fellow pupil with him of Rimsky-Korsakov. When she and Zakharov visited the Far East in 1928, he opted to stay in Shanghai and make his career there as a teacher; they were later divorced)
found: Vodarsky-Shiraeff, A. Russian composers and musicians, 1940(Hansen, Cecilia; married pianist B. Sakharov)
found: Schmidl, C. Diz. universale dei musicisti, 1938 :Suppl. (Hansen, Cecilia; married pianist Boris Sacharoff)
found: Altmann, W. Kurzgefasstes Tonkünstler-Lexikon, 14. Aufl:(Hansen, Cecilia; married pianist Boris Sacharow)