%0 Journal Article %A Marek Bodnar %A Urszula Foryƛ %T Periodic dynamics in a model of immune system %J Applicationes Mathematicae %D 2000 %P 113-126 %V 27 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/am-27-1-113-126/ %R 10.4064/am-27-1-113-126 %G en %F 10_4064_am_27_1_113_126