@article{KUKZ_1974_11_11_a5,
     author = {V. I. Zhegalov},
     title = {A generalization of the {Tricomi} problem},
     journal = {Trudy seminara po kraevym zada\v{c}am},
     pages = {43--52},
     publisher = {mathdoc},
     volume = {11},
     number = {11},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/KUKZ_1974_11_11_a5/}
}