M. Loreau, Catalogue Intégral des Travaux de Jean Dubuffet, fasc. XIX: Paris Circus , Lausanne, 1965, pp. 108 and 226, no. 209 (illustrated). M. Loreau, Dubuffet et le voyage au centre de la perception, de Paris-Circus au Grand-Art l'Hourloupe , Paris, 1966, p. 36. J. Asger, "Nogle iagttagelser anga°ende faenomenet Jean Dubuffet," Konstrevy, no. 1, 1967, p. 25 (illustrated in color). A. Franzke, Jean Dubuffet , Basel, 1975, p. 85, no. 64 (illustrated in color). A. Franzke, Jean Dubuffet , Basel, 1976, p. 85, no. 64 (illustrated in color). A. Franzke, Dubuffet , New York, 1981, p. 151. J. Kriz, Jean Dubuffet , Prague, 1989, p. 90, no. 57 (illustrated in color). M. Paquet, Dubuffet , Paris, 1993, p. 145, no. 201 (illustrated in color). D. Abadie, Dubuffet , exh. cat., Paris, Centre Pompidou, 2001, p. 235 (illustrated in color). L. Trucchi, Dubuffet , Florence, 2001, pp. 26-27 (illustrated in color)