@article{DAN_1960_130_1_a0,
     author = {M. M. Vainberg},
     title = {On the convergence of the method of steepest descent for nonlinear equations},
     journal = {Doklady Akademii Nauk},
     pages = {9--12},
     publisher = {mathdoc},
     volume = {130},
     number = {1},
     year = {1960},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1960_130_1_a0/}
}