First publication by the Experimentele Groep in Holland with text contributions from Constant, Corneille, Jan Elburg and Eugene Brands.
Text: Manifest, 1948 by Constant
PDF: Reflex #1, 1948
Second publication by the Experimentele Groep in Holland with text contributions from Eugene Brands, Constant, Corneille, Jan Elburg, Roland Holst, Gerrit Kouwenaar and Lucebert.
The cover was designed by Jacques Doucet
Text: Cultuur en contra cultuur, 1948 by Constant
PDF: Reflex #2
Article by Frans Duister on three exhibitions with Constant's work in Amsterdam in 1978: Aquarellen en tekeningen at Galerie d'Art, Schilderijen 1969-77 at Stedelijk Museum and Constant | Grafiek at Printshop Piet Clement.