%0 Journal Article %A Barari, A. %A Ghotbi, Abdoul R. %A Omidvar, M. %A Ganji, D. D. %T Solving Ratio-Dependent Predator-Prey System with Constant Effort Harvesting using Variational Iteration Method %J Serdica Journal of Computing %D 2009 %P 1-14 %V 3 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/SJC_2009_3_1_a0/ %G en %F SJC_2009_3_1_a0