@article{DE_1970_6_2_a8,
     author = {G. A. Bessmertnykh},
     title = {The existence and uniqueness of the solutions of a multi-point de la {Vall\'ee} {Poussin} problem for nonlinear differential equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {298--310},
     publisher = {mathdoc},
     volume = {6},
     number = {2},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1970_6_2_a8/}
}