- American Automatic Control Council (24)
- American Control Conference (19)
- American Institute of Aeronautics and Astronautics (17)
- International Federation of Automatic Control (9)
- Joint Automatic Control Conference (4)
- American Institute of Chemical Engineers (2)
- American Society of Mechanical Engineers (1)
- Joint Automatic Control Conference, Purdue University, 1976 (1)
- Society of Manufacturing Engineers (1)