@article{DE_1968_4_1_a8,
     author = {A. I. Yanushauskas},
     title = {Some cases of overdetermination of a problem on the oblique derivative},
     journal = {Differencialʹnye uravneni\^a},
     pages = {102--109},
     publisher = {mathdoc},
     volume = {4},
     number = {1},
     year = {1968},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1968_4_1_a8/}
}