@article{DE_1983_19_9_a2,
     author = {E. I. Zheleznov},
     title = {Necessary conditions for optimality with respect to the minimax of program control in the presence of constraints},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1487--1495},
     publisher = {mathdoc},
     volume = {19},
     number = {9},
     year = {1983},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1983_19_9_a2/}
}