@article{DAN_1971_201_1_a4,
     author = {A. N. Grin'},
     title = {On the theory of branching of solutions of a nonlinear equation in a multidimensional case of branching},
     journal = {Doklady Akademii Nauk},
     pages = {22--23},
     publisher = {mathdoc},
     volume = {201},
     number = {1},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1971_201_1_a4/}
}