@article{DE_1982_18_4_a5,
     author = {M. M. Novozhenov and V. I. Plotnikov},
     title = {The generalized rule of {Lagrangian} multipliers for distributed systems with phase constraints},
     journal = {Differencialʹnye uravneni\^a},
     pages = {584--592},
     year = {1982},
     volume = {18},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1982_18_4_a5/}
}