Autodialogue à propos de New Babylon (Autodialogue on New Babylon) in Opus International, nº 27, september Parijs 1971, p. 29-31. Republished in cat. of the exhibition New Babylon, Gemeentemuseum The Hague, 1974.Translated in Dutch: Autodialoog for the cat. of the exhibition New Babylon at the Gemeentemuseum Den Haag in 1974.Translated in Danish: Autodialog over Ny Babylon in cat. of the exhibition Det Ny Babylon, Århus, Kunstbygning Århus, 1976.
New Babylon. Versuch einer alternativen Umweltplanung in Befreiung des Alltags: Modelle eines Zusammenlebens ohne Leistungsdruck, Frustation und Angst, F. Böckelmann Ed., Münich 1970, p. 137-154.
Planologie of revolutie in Te elfder Ure, vol. 17, nº 4/5, April/May 1970, p. 165-184. Republished in cat. of the exhibition New Babylon, Gemeentemuseum The Hague, 1974.
New Babylon. En verden for Homo Ludens et New Babylon - Et forslag (New Babylon. A World for Homo Ludens. A suggestion) in cat. of the exhibition Constant. New Babylon, Oslo, Kunstnernes Hus, 1967.
Omtrent New Babylon. Een briefwisseling met Luc Wenseleers (About New babylon. A correspondence with Luc Wenseleers) in Ruimten. Letterkundig interuniversitair tijdschrift, vol 6, nº 21/22, 1967, p. 75-88.
Original in English, written in 1966, published in DATA [Directions in Art, Theory and Aesthetics. An Anthology], A. Hill ed. (London: Faber and Faber, 1968), p. 175-179. Published in Mark Wigley's book Constant's New Babylon - The Hyper-Architecture of Desire, 1998.
About the meaning of construction in Data. Directions in Art, Theory and Aesthetics: An Anthology edited by Anthony Hill, London, Faber and Faber, 1968, pp. 175-179.
Nieuw Urbanisme (New Urbanism) in Provo, nº 9, May 1966, p. 2-6.New Urbanism Buffalo, NY: Friends of Malatesta, 1970. New Urbanism in Delta, vol. 10, nº 3, 1967, p. 54-61.Ny urbanisme in Arkitekt og billedkunst, n.d., 1969, p. 70-71
Lecture for the members of the BNA, the union of Dutch architects, at the finishing of the new Schiphol (1966).Published in English: On travelling in Studio International, vol. 185, nº 955, May 1972, p. 228-229 and in Mark Wigley's New babylon, The Hyperatchitecture of Desire, p. 200-201.