%0 Journal Article %A E. I. Moiseev %A V. V. Tikhomirov %A E. A. Kozlov %T A mean value formula for the regular solution of a hyperbolic equation %J Differencialʹnye uravneniâ %D 1983 %P 1802-1803 %V 19 %N 10 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1983_19_10_a21/ %G ru %F DE_1983_19_10_a21