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
Documentation
Pages

Nieuw Urbanisme

Over het reizen
Lecture for the members of the BNA, the union of Dutch architects, at the finish of the new Schiphol (1966).
Published in English: On travelling in Studio International, vol. 185, nº 955, May 1972, p. 228-229

Text catalogue exhibition Neue Tendenzen der Architektur
Text catalogue exhibition Neue Tendenzen der Architektur, Bern, Kunsthalle, 1966.
Or more probable: Licht und Bewegung / Kinetische Kunst/ Neue Tendenzen der Architektur, 30 July – 5 September 1965, Bern Kunsthalle

De dialektiek van het experiment
In De dialektiek van het experiment (The Dialectic of the Experiment) Constant looks back at the preceding period in his career and the radical transformation that took place in his artistic development during the 1950s. He declares that while he can visualize ‘unitary urbanism’, the present state of society is fundamentally different from the societal situation essential to the realization of such a revolutionary programme. Consequently, unitary urbanism remains limited to isolated experiments and a programme.

New Babylon: een schets voor een cultuur
New Babylon: een schets voor een cultuur is an Dutch adaptation of an original German manuscript in collaboration with Caspari translated and adjusted by Constant. Neither the original Dutch text of 125 pages nor the German manuscript of 165 pages was ever published as a whole. A summary of the Dutch text was published in 1974 in the exhibition catalogue at Gemeentemuseum Den Haag. The original texts are at the RKD Archief Constant, they can be found under the following numbers:Dutch version 414[b] and German version 414[a]).

Phantastische Architektur
Phantastische Architektur (Fantastical Architecture) in Speculum Artis. Zeitschrift für alte und neue Kunst, vol. 17, nº 4, April 1965, p. 17-22.

Constant. Nieuw Babylon over ’s Gravenhage
Constant. Nieuw Babylon over ’s Gravenhage in Cobouw, 25 September 1964, p. 4-5.

New Babylon. Imaginäre Stadtlandschaften
Text in catalogue of exhibition New Babylon. Imaginäre Stadtlandschaften, Krefeld, Museum Haus Lange, 1964.
New Babylon: Imaginäre Stadtlandschaften in cat. of the exhibition Constant 1945-1983, Bonn, Rheinisches Landesmuseum, 1986, p. 41-44.

New Babylon: an Urbanism of the Future
New Babylon: an Urbanism of the Future in Architectural Design, vol. 34, nº 6, June 1964, p. 304-305.