Past affiliation(s) within the IAU

• Past President of Commission 42 Close Binary Stars (1994-1997)
• Past Vice-President of Commission 42 Close Binary Stars (1991-1994)
• Past Organizing Committee Member of Division V Variable Stars (1997-2000)
• Past Organizing Committee Member of Commission 42 Close Binary Stars (1997-2000)
• Past Organizing Committee Member of Commission 27 Variable Stars (1994-1997)
• Past Organizing Committee Member of Commission 27 Variable Stars (1991-1994)
• Past Organizing Committee Member of Commission 27 Variable Stars (1988-1991)
• Past Organizing Committee Member of Commission 42 Close Binary Stars (1988-1991)
• Past Organizing Committee Member of Commission 42 Close Binary Stars (1985-1988)
• Past Organizing Committee Member of Commission 42 Close Binary Stars (1982-1985)
• Past Member of Commission 27 Variable Stars
• Past Member of Commission 36 Theory of Stellar Atmospheres
• Past Member of Commission 42 Close Binary Stars
• Past Member of Division V Variable Stars (until 2012)