Priroda filʹtru︠i︡ushchikhs︠i︡a virusov i virusnye bolezni rasteniĭ : uspekhi v izuchenii virusnykh bolezneĭ rasteniĭ - Ryzhkov, V. L. (Vitaliĭ Leonidovich), 1896-1977 (Izd-vo Akademii nauk SSSR, 1939)