@article{KUKZ_1967_4_4_a10,
     author = {Yu. M. Krikunov},
     title = {The {Tricomi} problem for a certain special case of the equation $K(y)u_{xx}+u_{yy}=0$},
     journal = {Trudy seminara po kraevym zada\v{c}am},
     pages = {75--89},
     publisher = {mathdoc},
     volume = {4},
     number = {4},
     year = {1967},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/KUKZ_1967_4_4_a10/}
}