Geodesic
Solving Ratio-Dependent Predator-Prey System with Constant Effort Harvesting using Variational Iteration Method
Serdica Journal of Computing, Tome 3 (2009) no. 1, pp. 1-14.

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Due to wide range of interest in use of bio-economic models to gain insight into the scientific management of renewable resources like fisheries and forestry,variational iteration method (VIM) is employed to approximate the solution of the ratio-dependent predator-prey system with constant effort prey harvesting.The results are compared with the results obtained by Adomian decomposition method and reveal that VIM is very effective and convenient for solving nonlinear differential equations.
Keywords: Ratio-Dependant Predator-Prey Model, Variational Iteration Method, Prey Harvesting 
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Barari, A.; Ghotbi, Abdoul R.; Omidvar, M.; Ganji, D. D. Solving Ratio-Dependent Predator-Prey System with Constant Effort Harvesting using Variational Iteration Method. Serdica Journal of Computing, Tome 3 (2009) no. 1, pp. 1-14. http://geodesic.mathdoc.fr/item/SJC_2009_3_1_a0/