A Class of Simple Exponential B-Splines and Their Application to Numerical Solution to Singular Perturbation Problems. Manabu Sakai; Riaz A. Usmani — 1987 Numerische Mathematik
A Simple Rational Spline and its Application to Monotonic Interpolation to Monotonic Data. Manabu Sakai; M.C. de López de Silanes Numerische Mathematik
Two new finite difference methods for computing eigenvalues of a fourth order linear boundary value problem. Usmani, Riaz A.; Sakai, Manabu — 1987 International Journal of Mathematics and Mathematical Sciences