TY - JOUR AU - V. S. Rykhlov TI - Classical solution of the initial-boundary value problem for the wave equation with mixed derivative JO - Contemporary Mathematics. Fundamental Directions PY - 2024 SP - 451 EP - 486 VL - 70 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/CMFD_2024_70_3_a8/ LA - ru ID - CMFD_2024_70_3_a8 ER -