@article{UZKU_1962_122_3_a2,
     author = {Yu. M. Krikunov},
     title = {On the {Tricomi} problem with derivatives in the boundary conditions},
     journal = {U\v{c}\"enye zapiski Kazanskogo universiteta. Seri\^a Fiziko-matemati\v{c}eskie nauki},
     pages = {30--53},
     publisher = {mathdoc},
     volume = {122},
     number = {3},
     year = {1962},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/UZKU_1962_122_3_a2/}
}