@article{VMUMM_1982_6_a13,
     author = {V. A. Zorich and E. V. Maikov},
     title = {A problem of optimal control},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {71--75},
     year = {1982},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1982_6_a13/}
}