%0 Journal Article %A G. M. Fateeva %T The Cauchy problem and boundary value problem for linear and quasi-linear degenerating hyperbolic equations of second order %J Doklady Akademii Nauk %D 1967 %P 1278-1281 %V 172 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1967_172_6_a9/ %G ru %F DAN_1967_172_6_a9