%0 Journal Article %A V. V. Grushin %T Solutions of partial differential equations with constant coefficients %J Doklady Akademii Nauk %D 1961 %P 17-19 %V 139 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1961_139_1_a2/ %G ru %F DAN_1961_139_1_a2