%0 Journal Article %A M. B. Kapilevich %T On the problem of analytic continuation of the fundamental solutions of an hyperbolic type of equation with singular coefficients %J Doklady Akademii Nauk %D 1957 %P 167-170 %V 116 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1957_116_2_a0/ %G ru %F DAN_1957_116_2_a0