Galerie Christian Nagel, Cologne; Marc Jancou Fine Art, New York
Freising, Diozesanmuseum Freising, Junge Kunst im Diozesanmuseum Freising: Kai Althoff und Abel Auer, February 10 – April 6, 2003; Boston, Institute for Contemporary Art, May 26 – September 6, 2004 and Chicago, Museum of Contemporary Art, September 23, 2004 – January 16, 2005, Kai Kein Respekt (Kai No Respect)
N. Baume, ed., Kai Kein Respekt (Kai No Respect), Boston/Miami Beach, 2004, p. 119, no.131