@article{DE_1989_25_9_a30,
     author = {A. Yu. Chinilov},
     title = {Solution of the wave equation with an oblique derivative on the boundary},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1635--1637},
     publisher = {mathdoc},
     volume = {25},
     number = {9},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1989_25_9_a30/}
}