%0 Journal Article %A T. G. Pletneva %A S. D. Ăˆidel'man %T Three cylinder theorems for the solutions of quasielliptic linear evolution equations %J Doklady Akademii Nauk %D 1970 %P 507-510 %V 192 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1970_192_3_a7/ %G ru %F DAN_1970_192_3_a7