%0 Journal Article %A V. M. Borok %T Reduction to a single equation of an evolutional system of linear partial differential equations with constant coefficients %J Doklady Akademii Nauk %D 1957 %P 682-685 %V 114 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1957_114_4_a1/ %G ru %F DAN_1957_114_4_a1