Variat͡sionnye print͡sipy teorii uprugosti i teorii obolochek /

by Abovskiĭ, N. P., Andreev, Nikolaĭ Petrovich, Deruga, Anatoliĭ Petrovich
Moskva : Nauke, 1978

Narodnye russkie skazki A.N. Afanasʹeva,

by Afanasʹev, A. N. (Aleksandr Nikolaevich), 1826-1871
Moskva Academia, 1936