A Series Method for Solving Nonlinear Two-Point Boundary Value Problems. D.M. Greig; M.A. Abd-el-Naby — 1980 Numerische Mathematik
Iterative Solutions of Nonlinear Initial Value Differential Equations in Chebyshev Series Using Lie Series. D.M. Greig; M.A. Abd-el-Naby — 1980 Numerische Mathematik