%0 Journal Article %A A. A. Tuzhilin %T A theory of functional equations of Malju{\v z}inec. IV. Nonhomogeneous functional equations with periodic coefficients %J Differencialʹnye uravneniâ %D 1971 %P 1276-1287 %V 7 %N 7 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1971_7_7_a10/ %G ru %F DE_1971_7_7_a10