@article{DAN_1962_147_1_a4,
     author = {A. N. Konovalov},
     title = {The method of fractional steps for solving the {Cauchy} problem for a multi-dimensional wave equation},
     journal = {Doklady Akademii Nauk},
     pages = {25--27},
     publisher = {mathdoc},
     volume = {147},
     number = {1},
     year = {1962},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1962_147_1_a4/}
}