%0 Journal Article %A Yu. I. Kovach %T Proof of an existence and uniqueness theorem for the solution of the Cauchy problem by the method of two-sided approximation for the generalized 2n-wave system %J Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki %D 1965 %P 551-557 %V 5 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZVMMF_1965_5_3_a12/ %G ru %F ZVMMF_1965_5_3_a12