[1] Saidi, A.M. (1983). “Simulation of Naturally Fractured Reservoirs.” SPE paper 12270 presented at Seventh SPE Symposium on Reservoir Simulation, San Francisco, CA.
[2] German, E.R. (2002). “Water Infiltration in Fractured Porous Media: In-situ Imaging, Analytical Model, and Numerical Study.” PhD Dissertation, Stanford University.
[3] Bourblaux, B.J. and Kalaydjian, F.J. (1990). “Experimental study of cocurrent and countercurrent flows in natural porous media.” SPE Reservoir Engineering, Vol. 5, PP.361–368.
[4] Chimienti, M.E, Illiano, S.N and Najurieta, H.L. (1999). “Influence of temperature and interfacial tension on spontaneous imbibition process.” SPE paper 53668 presented as Latin American and Caribbean Petroleum Engineering Conference, Caracas, Venezuela.
[5] Pooladi-Darvish, M. and Firoozabadi, A. (2000). “Cocurrent and countercurrent imbibition in a water-wet matrix block.” SPE Journal, Vol. 5, PP. 23–11.
[6] Najurieta, H.L., Galacho, N., Chimienti, M.E. and S. N. Illiano, S.N. (2001). “Effects of temperature and interfacial tension in different production mechanisms.” SPE paper 69398 presented at Latin American and Caribbean Petroleum Engineering, Buenos Aires, Argentina.
[7] Tang, G.Q. and Firoozabadi, A. (2001). “Effect of pressure gradient and initial water saturation on water injection in water-wet and mixed-wet fractured porous media.” SPE Reservoir Evaluation and Engineering, Vol. 4, PP.516–524.
[8] Parsons, R.W. and Chaney, P.R. (1966). “Imbibition model studies on water-wet carbonate rocks.” SPE Journal, Vol. 6, PP.26–34.
[9] Iffly, R., Rousselet, D.C. and Vermeulen, J.L. (1972). “Fundamental study of imbibition in fissured oil fields.” SPE paper 4102 presented at Annual Fall Meeting, San Antonio
[10] Hamon, G. and Vidal, J. (1986). “Scaling-up the capillary imbibition process from laboratory experiments on homogeneous samples.” SPE paper 15852 presented at SPE European Petroleum Conference, London, England.
[11] Al-Lawati, S. and Saleh, S. (1996). “Oil recovery in fractured oil reservoirs by low IFT imbibition process.” SPE paper 36688 presented at SPE Annual Technical Conference and Exhibition, Denver, Colorado.
[12] Morrow, N.R. and Mason, G. (2006). “Recovery of oil by spontaneous imbibitions.” Current Opinion in Colloid and Interface Science, Vol. 6, PP.321-337
[13] Kashchiev, D. and Firoozabadi, A. (2003). “Analytical Solutions for 1D Countercurrent Imbibition in Water-Wet Media.” SPE Journal, Vol. 8, PP.401-408.
[14] Tavassoli, Z., Zimmerman, R.W. and Blunt, M.J. (2005). “Analysis of counter-current imbibition with gravity in weakly water-wet systems.” Journal of Petroleum Science and Engineering, Vol. 48, PP.94– 104.
[15] Silin, D. and Patzek, T. (2004). “On Barenblatt’s Model of Spontaneous Countercurrent Imbibition.” Transport in Porous Media, Vol. 54, PP.297–322.
[16] Behbahani, H.Sh., Donato G.D. and Blunt, M.J. (2006).“Simulation of counter-current imbibition in water-wet fractured reservoirs.” Journal of Petroleum Science and Engineering, Vol. 50, PP.21– 39.
[17] Cai, X.C., Wu, W.Y. and Li, M.S. (2006). “Approximate period solution for a kind of nonlinear oscillator by He’s homotopy perturbation method.” International Journal of Nonlinear Sciences and Numerical Simulation, Vol. 7, PP.109–117.
[18] Cveticanin, L. (2006). “ Homotopy perturbation method for pure nonlinear differential equation.” Chaos, Solitons& Fractals, Vol. 30, PP.1221–1230.
[19] El-Shahed, M. (2005). “Application of He’s homotopy perturbation method to Volterra’s integro-differential equation.” International Journal of Nonlinear Sciences and Numerical Simulation, Vol. 6, PP.163–168.
[20] Abbasbany, S. (2006). “Application of He’s homotopy perturbation method for Laplace transform.” Chaos, Solitons& Fractals, Vol. 30, PP.1206–1212.
[21] Belendez, A., Hernandez, A., Belendez, T., Fernández, E., Álvarez, M.L. and Neipp, C. (2007). “Application of He’s homotopy perturbation method to the Duffing-harmonic oscillator.” International Journal of Nonlinear Sciences and Numerical Simulation, Vol. 8, PP.79–88.
[22] He, J.H. (2006). “New interpretation of homotopy perturbation method.” International Journal of Modern Physics B, Vol. 20, PP.2561–2568.
[23] Rafei, M. (2006). “Solitary wave solutions for a generalized Hirota-Satsuma coupled KdV equation by homotopy perturbation method.” Physics Letter A, Vol. 356, PP.131-137.
[24] Ganji, D.D. and Rajabi, A. (2006). “Assessment of Homotopy-Perturbation and Perturbation Methods in Heat Radiation Equations.” International Communications in Heat and Mass Transfer, Vol. 33, PP.391-400.
[25] Ganji, D.D. (2006). “The application of He’s homotopy perturbation method to nonlinear equations arising in heat transfer.” Physics Letter A, Vol. 355, PP.337-341.
[26] He, J. H. (1999). “Homotopy perturbation technique.” Computer Methods in Applied Mechanics and Engineering, Vol. 178, PP.257–262.
[27] He, J. H. (2005). “Application of homotopy perturbation method to nonlinear wave equations.” Chaos Solitons Fractals, Vol. 26, PP.695–700.
[28] He, J. H. (2005). “Homotopy perturbation method for bifurcation of nonlinear problems.” International Journal of Nonlinear Sciences and Numerical Simulation, Vol. 6, PP.207–208.
[29] He, J. H. (2006). “Homotopy perturbation method for solving boundary value problems.” Physics Letter A, Vol. 350, PP.87–88.
[30] He, J. H. (2006). “Some asymptotic methods for strongly nonlinear equations.” International Journal of Modern Physics B, Vol. 20, PP.1141–1199.
[31] He, J. H. (2008). “Recent development of the homotopy perturbation method”. Topological Methods in Nonlinear Analysis, Vol. 31, PP.205– 209.
[32] He, J. H. (2008). “An elementary introduction to recently developed asymptotic methods and nanomechanics in textile engineering.” International Journal of Modern Physics B, Vol. 22, PP.3487–3578.
[33] Yildirim, A. and Sezer, S.A. (2012). “Analytical solution of MHD stagnation point flow in porous media by means of the homotopy perturbation method.” Journal of Porous Media, Vol. 15, No. 1, PP.83-94
[34] He, J.H, (2005). “Periodic solutions and bifurcations of delay-differential equations.” Physics Letter A, Vol. 347, PP.228–230.
[35] He, J.H. (2005). “Limit cycle and bifurcation of non-linear problems.” Chaos, Solitons & Fractals, Vol. 26, PP.827–833.
[36] Siddiqui, A.M., Mahmood, R. and Ghori, Q.K. (2008). “Homotopy perturbation method for thin film flow of a third grade fluid down an inclined plane.” Chaos, Solitons& Fractals, Vol. 35, PP.140–147.
[37] Biazar, J. and Ghazvini, H. (2009). “He’s homotopy perturbation method for solving systems of Volterra integral equations of the second kind.” Chaos, Solitons& Fractals, Vol. 39, PP.770–777.
[38] Cveticanin, L. (2009).“ Application of homotopy-perturbation to non-linear partial differential equations.” Chaos, Solitons& Fractals, Vol. 40, PP.221–228.
[39] Ravi Kanth, A.S.V. and Aruna, K. (2009). “ He’s homotopy perturbation method for solving higher-order boundary value problems.” Chaos, Solitons& Fractals, Vol. 41, PP.1905–1909.
[40-] Cai, X.C. and Wu, W.Y. (2009).“ Homotopy perturbation method for nonlinear oscillator equations.” Chaos, Solitons& Fractals, Vol. 41, PP.2581-2583
[41] Fathizadeh, M. and Rashidi, F. (2009).“ Boundary layer convective heat transfer with pressure gradient using Homotopy Perturbation Method (HPM) over a flat plate.” Chaos, Solitons& Fractals, Vol. 42, PP.2413-2419
[42] Chen, Z., Huan, G. and Ma, Y. (2006). “Computational Methods for Multiphase Flows in Porous Media.” Philadelphia: Society for Industrial and Applied Mathematics, PP. 260-276.
[43] Scheidegger, A.E. and Johnson, E.F. (1961). “The statistical behavior of instabilities in displacement process in porous media.” Canadian Journal of Physics, Vol. 39, No. 2, PP.326-33.