Interview with the artist by Linda Boersma, translated from Dutch by Sue Smit.
Article in The Times about Sir Charles Cockerell.Reference to Constant in paragraph nine.
Review of the exhibition Constant, Een keuze uit het grafisch oeuvre at the Cobra museum of modern art in Amstelveen.
Announcement of the exhibition Constant Graveur at the Cobra Museum of Modern Art Amstelveen.
A review of the British media following the English and Irish tour of the exhibition Cobra | Copenhagen, Brussels, Amsterdam in 2003.
Review of a retrospective Cobra exhibition and Tail That Wags the Dog at IMMA, Dublin, Ireland.
Article in The Times on Adolfo Natalini and Superstudio. The article reference Constant in paragraph eight.