Past affiliation(s) within the IAU

• Past President of Commission 35 Stellar Constitution (1982-1985)
• Past Vice-President of Commission 35 Stellar Constitution (1979-1982)
• Past Organizing Committee Member of Commission 27 Variable Stars (1985-1988)
• Past Organizing Committee Member of Commission 35 Stellar Constitution (1985-1988)
• Past Organizing Committee Member of Commission 27 Variable Stars (1982-1985)
• Past Organizing Committee Member of Commission 27 Variable Stars (1979-1982)
• Past Organizing Committee Member of Commission 12 Solar Radiation & Structure (1976-1979)
• Past Organizing Committee Member of Commission 27 Variable Stars (1976-1979)
• Past Organizing Committee Member of Commission 35 Stellar Constitution (1973-1976)
• Past Organizing Committee Member of Commission 35 Stellar Constitution (1970-1973)
• Past Member of Division E Sun and Heliosphere
• Past Member of Division G Stars and Stellar Physics
• Past Member of Commission 35 Stellar Constitution
• Past Member of Commission 12 Solar Radiation & Structure (until 2013)
• Past Member of Commission 27 Variable Stars (until 2013)
• Past Member of Division II Sun & Heliosphere (until 2012)
• Past Member of Division V Variable Stars (until 2012)