Parallel Implementations of Two Algorithms for Solving Linear Programming Problems. - Gerard L. Reijns; Ruurd M. Wiegers; Gert-Jan Boesschen Hospers (Decentralized and Distributed Systems, 1993)

Parallel Branch-and-Bound for Mixed Integer Programming with Monotone Increasing Speedup. - Ruurd M. Wiegers (EUROSIM, 1994)