%0 Journal Article %A F. E. Lomovtsev %T Generalized Riemann formulas for the solution of the first mixed problem for the general telegraph equation with variable coefficients in the first quadrant %J Itogi nauki i tehniki. Sovremennaâ matematika i eë priloženiâ. Tematičeskie obzory %D 2024 %P 50-69 %V 232 %I mathdoc %U http://geodesic.mathdoc.fr/item/INTO_2024_232_a4/ %G ru %F INTO_2024_232_a4