TY - JOUR AU - Fischer, Alexandr TI - Approximation of periodic solutions of a system of periodic linear nonhomogeneous differential equations JO - Applications of Mathematics PY - 2004 SP - 269 EP - 284 VL - 49 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.1023/B:APOM.0000042366.62321.55/ DO - 10.1023/B:APOM.0000042366.62321.55 LA - en ID - 10_1023_B_APOM_0000042366_62321_55 ER -