Kolokol. (The bell). Gazeta /
Academy of Sciences of the Union of Soviet Socialist Republics (Moscow). - Institute of History.
Gert︠s︡ena, A. I.
Ogareva, N. P.
Nechkina, M. V.(Milit︠s︡a Vasilʹevna),1901-1985.
Rubnit︠s︡koĭ, E. L.
Moskva,
1962-1964.