%0 Journal Article %A O. A. Oleinik %A E. V. Radkevich %T Analyticity and theorems of Liouville and Phragmen--Lindel\"of type for general parabolic systems of differential equations %J Funkcionalʹnyj analiz i ego priloženiâ %D 1974 %P 59-70 %V 8 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/FAA_1974_8_4_a7/ %G ru %F FAA_1974_8_4_a7