Demeter, Persephone, and the Search for Emergence in Agent-Based Models. - Michael J. North; T. R. Howe; Nicholson T. Collier; Jerry R. Vos (AAAI Fall Symposium: Interaction and Emergent Phenomena in Societies of Agents, 2006)

A Declarative Model Assembly Infrastructure for Verification and Validation. - Michael J. North; T. R. Howe; Nicholson T. Collier; Jerry R. Vos (WCSS, 2006)

Experiences creating three implementations of the repast agent modeling toolkit. - Michael J. North; Nicholson T. Collier; Jerry R. Vos (ACM Trans. Model. Comput. Simul., 2006)