@article{IVM_2013_1_a3, author = {M. Mirsaburov and Zh. Khudzhaev}, title = {A problem with {Tricomi} and {Frankl} conditions on the characteristic for a~class of mixed-type equations}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {41--50}, publisher = {mathdoc}, number = {1}, year = {2013}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_2013_1_a3/} }