Rastitelʹnye resursy SSSR : ︠t︡svetkovye rasteni︠i︡a, ikh khimicheskiĭ sostav, ispolʹzovanie - Fedorov, Al. A., 1906-; Sokolov, P. D.; Budan︠t︡sev, A. L. ("Nauka," Leningradskoe otd-nie, 1984)