Boundary value problems for matrix Euler-Poisson-Darboux equation with data on a characteristic

od Aleksander A Andreev, Ekaterina A Maksimova
Wydane 2015-12-01

The Goursat problem for one hyperbolic system of the third order differential equations with two independent variables

od Aleksander A Andreev, Julia O Yakovleva
Wydane 2011-09-01