@article{DAN_1977_236_6_a5,
     author = {A. G. Podgaev},
     title = {On the solvability of the generalized {Tricomi} problem for a nonlinear equation},
     journal = {Doklady Akademii Nauk},
     pages = {1307--1310},
     publisher = {mathdoc},
     volume = {236},
     number = {6},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1977_236_6_a5/}
}