@article{DE_1983_19_2_a14,
     author = {N. G. Topiler},
     title = {Behavior of the solution of the {Cauchy} problem for the equation $u_{xx}-q(x)u_{tt}=0$ for large time values~$t$},
     journal = {Differencialʹnye uravneni\^a},
     pages = {347--353},
     publisher = {mathdoc},
     volume = {19},
     number = {2},
     year = {1983},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1983_19_2_a14/}
}