%0 Journal Article %A S. V. Podkletnova %T Series of boundary value problems for Euler~---~Darboux equation with two degeneracy lines %J Ufa mathematical journal %D 2024 %P 94-115 %V 16 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/UFA_2024_16_4_a7/ %G en %F UFA_2024_16_4_a7