@article{UZERU_2005_2_a4,
     author = {V. R. Barseghyan and G. S. Chilingaryan},
     title = {About a task of optimal control of variable-mass particle motion in gravitational field},
     journal = {Proceedings of the Yerevan State University. Physical and mathematical sciences},
     pages = {31--39},
     publisher = {mathdoc},
     number = {2},
     year = {2005},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/UZERU_2005_2_a4/}
}