%0 Journal Article %A N. L. Vasilevskii %A A. A. Karelin %T Investigation of a boundary value problem for a partial differential equation of mixed type by means of reduction to a singular integral equation with a Carleman shift %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 1978 %P 15-19 %N 3 %U http://geodesic.mathdoc.fr/item/IVM_1978_3_a2/ %G ru %F IVM_1978_3_a2