@article{DE_1984_20_4_a5,
     author = {V. Ya. Ruzakov and A. G. Chentsov},
     title = {A linear differential game of approach with a nonconvex target set},
     journal = {Differencialʹnye uravneni\^a},
     pages = {593--597},
     publisher = {mathdoc},
     volume = {20},
     number = {4},
     year = {1984},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1984_20_4_a5/}
}