P. Rehberg, 'Von Unten', in Manner, Issue 0611 (illustrated, pp. 66 and 67).
J. Van Bennekom & G. Jonkers (eds.), Butt Book, Cologne 2006 (illustrated, p. 184).
Vestfossen, Vestfossen Kunstlaboratorium, Everybody counts, 2008 (illustrated, pp. 64-5 and 168).
Cologne, Museum Ludwig, The Eighth Square, 2006 (another from the edition exhibited, illustrated in colour on the cover and p. 160).