@article{DE_1982_18_6_a12,
     author = {G. F. Kuliev and K. K. Gasanov},
     title = {Necessary conditions for optimality for certain systems with distributed parameters and with control in the coefficients multiplying the highest derivatives},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1028--1036},
     publisher = {mathdoc},
     volume = {18},
     number = {6},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1982_18_6_a12/}
}