M. Bochner, "Primary Structures," Arts Magazine, June 1966, vol. 40, no. 8, pp. 33-34 (illustrated). C. Robins, "Object, Structure or Sculpture: Where Are We?" Arts Magazine, September-October 1966, vol. 40, no. 9, p. 36. Dan Flavin, Galerie Rudolf Zwirner, Cologne, 1966, n.p. (another example illustrated). Drawings and Diagrams from Dan Flavin 1963-1972; Corners, Barriers and Corridors in Fluorescent Light from Dan Flavin, exh. cat., St. Louis Art Museum, 1973, pp. 50 and 52. M. Matta, C. Vogt and P. Blum, "Die Sammlung Panza di Biumo," Du, 1980, no. 8, p. 7, (another example illustrated in color). G. Celant, Das Bild einer Geschichte 1956-1976: Die Sammlung Panza di Biumo, Milan, 1980, p. 102 (another example illustrated in color). Art of the Sixties and Seventies: The Panza Collection, New York, 1987, p. 40 (another example illustrated in color). E. Vedrenne, "Un temple du vide," Decoration Internationale, March 1987, no. 59, p. 140 (another example illustrated in color). Arte Minimal de la Coleccion Panza, exh. cat., Madrid, 1988, p. 27 (another example illustrated in color). R. Rosenblum, "Name in Lights," Artforum, March 1997, vol. 36, no. 7, p. 12. J. Meyer, Minimalism: Art and Polemics in the Sixties, New Haven and London, 2001, p. 15 (illustrated). G. Panza di Biumo, The Panza Collection: Villa Menafoglio Litta Panza, Geneva and Milan, 2002, p. 121 (another example illustrated in color). M. Govan and T. Bell, Dan Flavin: The Complete Lights 1961-1996, New York, 2004, p. 249, no. 108 (another example illustrated in color). C. Knight, "Painting with Light," Los Angeles Times, 3 April 2005, p.E29 (illustrated in color). J. Weiss, ed., Dan Flavin: New Light, New Haven, 2006, pp. 6-8 and 9 (illustrated in color).