@article{DE_1989_25_11_a15,
     author = {N. E. Tsapenko},
     title = {New formulas for the approximate solution of a one-dimensional wave equation},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1941--1946},
     publisher = {mathdoc},
     volume = {25},
     number = {11},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1989_25_11_a15/}
}