- BNA newsletter, Sept. 1978
- Intermediair: Newsletter for the authors and other contributors to the series "The Built Environment".
- Explanatory memorandum on regulations concerning the protection of the titles architect, urban planner ... (Architect's Title Act)
- Lower House, session 1979-1980 16 191, no. 3.
- Plan: letter to board BNA, 14-05-1980.