%0 Journal Article %A I. D. Kolesin %T Cyclic oscillations in a model of an epidemic process %J Differencialʹnye uravneniâ %D 1996 %P 1289-1290 %V 32 %N 9 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1996_32_9_a19/ %G ru %F DE_1996_32_9_a19