%0 Journal Article %A A. A. Alekseev %T On the absence of periodic solutions to a system of differential equations %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 1996 %P 3-7 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_1996_5_a0/ %G ru %F IVM_1996_5_a0