1973-74

Advisor for the Ministery of Culture and Sport (Minister Jos Chabert)

1978-82

Scientific assistant of Professor Seghers, Director of the “ Conservatiecentrum” of Gent’s museum : mission : scientific research of paintings

from 1980

Specialized in 16th and 17th century Flemish and Dutch masters and Belgium modern art from 1830 to 1950
  1. Member of the ' Kamer van Experten belast met scheidsrechtelijke en gerechtelijke opdrachten ' in Brussels
  2. President en member of the ' Vlaamse Vereniging van Experten voor Kunst en Antiquiteiten ' (VVEKA)
  3. Expert for the Court of Justice, the Police Criminal Investigation (BOB)-(BSR), in Germany (Bundeskriminalant), in France (Police Judiciaire de Nanterre)
  4. Member of the ' Belgische Kamer van Deskundigen in Kunstwerken ' in Brussels
  5. President en member of ORDINEX, ' Organisation internationale des Experts ' agreed by Unesco until 1998.