Jef Verheyen, 678 Le Plein, 1967. Sculpture, high-grade steel, polished, 65 x 41,5 x 7,5 cm.
Jef Verheyen, Sammlung Lenz, The ZERO Era (Vol. 1 & 2), 2009. Book.
Gerald Dauphin, Jef Verheyen, Jef Verheyen presents his sculpture 'Le Vide' up against the sky, 1965. Photography, photograph.