MO/33/007: Variable components of binaries or multiple stars
PX/6/SS/03: Double Stars from HIPPARCOS to GAIA - HIPPARCOS, GAIA (coordinator of the project)
PY/4/SS/26: Data Exploitation - HIPPARCOS (coordinator of the project)
MO/33/018: Pulsation, chemical composition and multiplicity in main-sequence A- and F-type stars