Nourazar, S. S. , , Tamim, H. , , Khalili, S. , and Mohammadzadeh, A. . "Simulation of Singular Fourth- Order Partial Differential Equations Using the Fourier Transform Combined With Variational Iteration Method", AUT Journal of Modeling and Simulation, 45, 1, 2015, 27-45. doi: 10.22060/miscj.2015.487