%0 Journal Article %A Gustavo A. Ossandón %A Ricardo Castro Santis %T Population Dynamics with Density-Dependent Immigrations and Allee e?ect %J Revista colombiana de matematicas %D 2018 %P 211-218 %V 52 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/RCM_2018_52_2_a5/ %F RCM_2018_52_2_a5