@article{Dehghan_2008 author = {Mehdi Dehghan and Fatemeh Shakeri}, title = {Use of He's Homotopy Perturbation Method for Solving a Partial Differential Equation Arising in Modeling of Flow in Porous Media}, journal = {Journal of Porous Media}, issn = {1091-028X}, year = {2008}, volume = {11}, number = {8}, pages = {765--778} }