%0 Journal Article %A V. S. Vladimirov %T A~generalization of Liouville's theorem %J Informatics and Automation %D 1961 %P 9-27 %V 64 %I mathdoc %U http://geodesic.mathdoc.fr/item/TRSPY_1961_64_a2/ %G ru %F TRSPY_1961_64_a2