Vector controlled concurrent systems, part II: comparisons. - N. W. Keesmaat; H. C. M. Kleijn; Grzegorz Rozenberg (Fundam. Informaticae, 1991)

The effect of vector synchronization: residue and loss. - N. W. Keesmaat; H. C. M. Kleijn (Advances in Petri Nets: The DEMON Project, 1992)

The Intersection Problem for Alphabetic Vector Monoids. - Tero Harju; N. W. Keesmaat; H. C. M. Kleijn (RAIRO Theor. Informatics Appl., 1994)

Net-Based Control Versus Rational Control. The Relation Between ITNC Vector Languages and Rational Relations. - N. W. Keesmaat; H. C. M. Kleijn (Acta Informatica, 1997)

Restrictions and Representations of Vector Controlled Concurrent System Behaviours. - N. W. Keesmaat; H. C. M. Kleijn (Theor. Comput. Sci., 1997)