Donald de Guerre has worked with OST methods for 30 years in both organizations and communities. He is now a faculty member in the Department of Applied Human Sciences at Concordia University in Montréal. He teaches graduates and undergraduates in the domains of human systems intervention and action research, consulting process and skills, organizational design, and small group development. His research is focused on the further development of OST and its methods.

Contributor to The Change Handbook - Available as article-length Fast Fundamentals whitepaper (PDF download): Evolutions of Open Systems Theory