%0 Journal Article %A V. S. Mokeichev %T Differential equations whose coefficients are constant operators %J Issledovaniya po Prikladnoi Matematike i Informatike %D 1973 %P 57-63 %I mathdoc %U http://geodesic.mathdoc.fr/item/KUIPM_1973_a8/ %G ru %F KUIPM_1973_a8