@article{UZKU_1969_129_3_a12,
     author = {V. N. Nikolenko and I. Kh. Khairyllin},
     title = {A certain mixed problem for a~degenerate equation of hyperbolic type},
     journal = {U\v{c}\"enye zapiski Kazanskogo universiteta. Seri\^a Fiziko-matemati\v{c}eskie nauki},
     pages = {131--134},
     publisher = {mathdoc},
     volume = {129},
     number = {3},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/UZKU_1969_129_3_a12/}
}