KalinovichV. N.; MitropolskiyY. A.; OnishchenkoS. M.; PolishchukA. N.; SamoilenkoA. M. On V.N. Koshlyakov’s works in mechanics and its applications. Ukrains’kyi Matematychnyi Zhurnal, v. 49, n. 11, p. 1444–1453, 25 Nov. 1997.