Love and mathematics : Sofya Kovalevskaya /

by Kochina, P. I͡A. (Pelagei͡a I͡Akovlevna), 1899-
Published 1985

Theory of ground water movement /

by Kochina, P. I͡A. (Pelagei͡a I͡Akovlevna), 1899-
Published 1962

Sophia Vasilyevna Kovalevskaya, her life and work /

by Kochina, P. I͡A. (Pelagei͡a I͡Akovlevna), 1899-
Published 1957

Zhiznʹ i dei︠a︡telʹnostʹ S.V. Kovalevskoĭ. : K 100-letii︠u︡ co dni︠a︡ rozhdenii︠a︡.

by Kochina, P. I͡A. (Pelagei͡a I͡Akovlevna), 1899-
Published 1950