%0 Journal Article %T Scientific research seminar of the department of elasticity (sessions of the %J Vestnik Moskovskogo universiteta. Matematika, mehanika %D 1983 %P 122-123 %N 3 %U http://geodesic.mathdoc.fr/item/VMUMM_1983_3_a20/ %G ru %F VMUMM_1983_3_a20