Il'yasov R R

Publications in Math-Net.Ru

1. Solution of the Tricomi problem for an equation of mixed type with a singular coefficient by the spectral method
   
   Izv. Vyssh. Uchebn. Zaved. Mat., 2004, no. 2,  64–71
2. On the ill-posedness of boundary value problems for a class of hyperbolic equations
   
   Izv. Vyssh. Uchebn. Zaved. Mat., 2001, no. 5,  59–63