%0 Journal Article %A V. R. Barseghyan %A G. S. Chilingaryan %T About a task of optimal control of variable-mass particle motion in gravitational field %J Proceedings of the Yerevan State University. Physical and mathematical sciences %D 2005 %P 31-39 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/UZERU_2005_2_a4/ %G ru %F UZERU_2005_2_a4