%0 Journal Article %A N. I. Fel'dman %T An effective refinement of the exponent in Liouville's theorem %J Izvestiya. Mathematics %D 1971 %P 985-1002 %V 5 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM2_1971_5_5_a1/ %G en %F IM2_1971_5_5_a1