%0 Journal Article %A L. A. Manita %T Optimal control of an oscillator with variable stiffness %J Vestnik Moskovskogo universiteta. Matematika, mehanika %D 1993 %P 89-91 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/VMUMM_1993_6_a21/ %G ru %F VMUMM_1993_6_a21