Solving Symbolic and Numerical Problems in the Theory of Shells with MATHEMATICA. - Ryszard A. Walentynski (SNSC, 2001)

Choleski-Banachiewicz Approach to Systems with Non-positive Definite Matrices with Mathematica. - Ryszard A. Walentynski (International Conference on Computational Science, 2004)

Safety of Recreational Water Slides: Numerical Estimation of the Trajectory, Velocities and Accelerations of Motion of the Users. - Piotr S. Szczepaniak; Ryszard A. Walentynski (International Conference on Computational Science (2), 2007)