@article{MZM_1986_40_1_a6,
     author = {A. I. Panasyuk and V. I. Panasyuk},
     title = {Boundedness of optimal trajectories},
     journal = {Matemati\v{c}eskie zametki},
     pages = {65--74},
     publisher = {mathdoc},
     volume = {40},
     number = {1},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1986_40_1_a6/}
}