%0 Journal Article
%T Positive Solutions of Differential Equations with Unbounded Green's Kernel
%A John R. Graef
%A Seshadev Padhi
%A Smita Pati
%A P. K. Kar
%J Applicable Analysis and Discrete Mathematics
%D 2012
%I University of Belgrade and Academic Mind
%R 10.2298/aadm120418011g
%X Sufficient conditions are obtained for the existence/nonexistence of at least two positive periodic solutions of a class of first order differential equations having an unbounded Green¡¯s function. An application to an ecological model with strong Allee effects is also given.
%K Positive periodic solutions
%K multiple periodic solutions
%K Allee effect
%U http://pefmath.etf.rs/vol6num2/AADM-Vol6-No2-159-173.pdf