%0 Journal Article
%T Global Attractivity of a Periodic Delayed -Species Model of Facultative Mutualism
%A Ahmadjan Muhammadhaji
%A Zhidong Teng
%J Discrete Dynamics in Nature and Society
%D 2013
%I Hindawi Publishing Corporation
%R 10.1155/2013/580185
%U http://dx.doi.org/10.1155/2013/580185