Solodovnikov I E

Publications in Math-Net.Ru

1. A problem of Tricomi type for the equation $\operatorname{sgn}y|y|^mu_{xx}+u_{yy}=0$
   
   Trudy Sem. Kraev. Zadacham, 11 (1974),  165–170
2. The generalized Gellerstedt problem for a certain particular case of the equation $k(y)u_{xx}+u_{yy}=0$
   
   Trudy Sem. Kraev. Zadacham, 10 (1973),  130–139