Authoring Interactive Narratives with Declarative Optimization-Based Drama Management. - Mark J. Nelson; Calvin Ashmore; Michael Mateas (AIIDE, 2006)

The Quest in a Generated World. - Calvin Ashmore; Michael Nitsche (DiGRA Conference, 2007)

Principles of emergent design in online games: Mermaids phase 1 prototype. - Celia Pearce; Calvin Ashmore (Sandbox@SIGGRAPH, 2007)