%0 Journal Article %A E. K. Isakova %T The principle of limiting amplitude for the Cauchy--Poisson problem.~III %J Differencialʹnye uravneniâ %D 1970 %P 1289-1297 %V 6 %N 7 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1970_6_7_a16/ %G ru %F DE_1970_6_7_a16