The international workgroup for constructive art (internationaler arbeitskreis fur konstruktive gestaltung
called iafkg for short) was formed in 1972 in Antwerp. The key purpose of this cooperative, whose founding
members were officially stated as the two German artists Pierre de Poortere and HD Schrader in tandem with
the Belgian artist Guy Vandenbranden, lay in the development and presentation of thematically oriented work
programmes executed by a changing array of artists.