Vsesoyuznaya Knizhnaya Plata, Pechat’ SSSR v 1959 godu, table; - , Pechat’ SSSR v 1970 godu, table 38;
Tsentral’noe Statisticheskoe Upravlenie, Itogi vsesoyuznoy prespisi naseleniya 1970 goda, vol. 4, table 1.
