%0 Journal Article %A CaƱada, A. %A Zertiti, A. %T Systems of nonlinear delay integral equations modelling population growth in a periodic environment %J Commentationes Mathematicae Universitatis Carolinae %D 1994 %P 633-644 %V 35 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_1994__35_4_a4/ %G en %F CMUC_1994__35_4_a4