@article{DE_1983_19_6_a20,
     author = {I. P. Ryazantseva},
     title = {The principle of the residual for nonlinear problems with monotone operators},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1079--1080},
     publisher = {mathdoc},
     volume = {19},
     number = {6},
     year = {1983},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1983_19_6_a20/}
}