To the task of the elastic line of twofold curvature

Nikolai, Evgeny Leopoldovich (1880-1950).To the problem of the elastic line of the twofold curvature / E. Nikolai.- Petrograd: Type.A.E.Collins, 1916. -X, 200 p., 2 liters.Il.: IL., Table.;28 cm. -Bibliogr.in a substrateNote..1. People (collection).Electronic Source: PBOriginal Storage Place: SPbSU