1. 4th World Hydrogen Energy Conference, Los Angeles, California, U.S.A. 13–17 June 1982
2. (1987). Stopping Air Pollution at Its Source: Clean Air Program (Discussion Paper: Air Pollution Regulation 308), Ontario Ministry of the Environment, Queen's Printer for Ontario, Toronto.
3. (1990). List of Ambient Air Quality Criteria, Standards, Interim Standards, Tentative Design Standards and Provisional Guidelines as of 1 May 1990, Ontario Ministry of the Environment, Air Resources Branch, Toronto.
4. Exergy, waste accounting, and life-cycle analysis