@article{DE_1987_23_4_a25,
     author = {N. N. Petrov and V. A. Prokopenko},
     title = {On a problem of the pursuit of a group of evaders},
     journal = {Differencialʹnye uravneni\^a},
     pages = {725--726},
     publisher = {mathdoc},
     volume = {23},
     number = {4},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1987_23_4_a25/}
}