%0 Journal Article %A Fischer, Alexandr %T Approximation of periodic solutions of a system of periodic linear nonhomogeneous differential equations %J Applications of Mathematics %D 2004 %P 269-284 %V 49 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.1023/B:APOM.0000042366.62321.55/ %R 10.1023/B:APOM.0000042366.62321.55 %G en %F 10_1023_B_APOM_0000042366_62321_55