1. An optimization approach to the determination of the boundaries of manipulator workspaces,;Snyman,1998
2. An optimization approach to the determination of manipulator workspaces;du Plessis,1999
3. Numerical algorithms for mapping boundaries of manipulator workspaces;Haug;IUTAM Fifth Summer School on Mechanics, Aalborg, Denmark: Concurrent Engineering Tools for Dynamic Analysis and Optimization,1994
4. A new and dynamic method for unconstrained minimization;Snyman;Appl. Math. Modeling,1982
5. An improved version of the original leap-frog method for unconstrained minimization;Snyman;Appl. Math. Modeling,1983