@article{DAN_1976_226_5_a19,
     author = {P. E. Strezh},
     title = {On asymptotic solutions for one-dimensional wave problems},
     journal = {Doklady Akademii Nauk},
     pages = {1058--1061},
     publisher = {mathdoc},
     volume = {226},
     number = {5},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1976_226_5_a19/}
}