%0 Journal Article %A A. B. Nersesyan %T The Cauchy problem for a second order hyperbolic equation which is degenerate on the initial hyperplane %J Doklady Akademii Nauk %D 1968 %P 798-801 %V 181 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1968_181_4_a7/ %G ru %F DAN_1968_181_4_a7