On a Parametric Spline function A parametric spline method for second-order singularly perturbed boundary-value problem Cubic Nonpolynomial Spline Approach to the Solution of a Second Order Two-Point Boundary Value Problem The Numerical Solution of Linear Third Order Boundary Value Problems using Nonpolynomial Spline Technique The Numerical Solution of Linear Fourth Order Boundary Value Problems using Nonpolynomial Spline Technique Restrictive Approximation Algorithm for Kuramoto–Sivashinsky Equation Restrictive Taylor Approximation for Gardner and KdV Equations Analysis of Unsteady Squeezing Fluid Flow through Porous Medium Channel with Slip and No-Slip Boundaries Using DTM