TY - JOUR AU - A. K. Urinov AU - D. A. Usmonov TI - An initial-boundary problem for a hyperbolic equation with~three lines of degenerating of the second kind JO - Journal of Samara State Technical University, Ser. Physical and Mathematical Sciences PY - 2022 SP - 672 EP - 693 VL - 26 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/VSGTU_2022_26_4_a3/ LA - ru ID - VSGTU_2022_26_4_a3 ER -