Crank-Nicolson-Galerkin approximation of the periodic solutions of weakly nonlinear parabolic equations A. Olejniczak — 1985 Applicationes Mathematicae
Continuous approximation of time-periodic solutions of a linear parabolic equation A. Olejniczak — 1987 Applicationes Mathematicae
Some remarks on the intervals of stability of Runge-Kutta methods after Richardson extrapolation A. Olejniczak — 1987 Applicationes Mathematicae
A method for finding the step size of integration of a system of ordinary differential equations J. S. Chomicz; A. Olejniczak; M. Szyszkowicz — 1983 Applicationes Mathematicae