Robert Irwin
: [June 20 August 15, 1993, The Museum of Contemporary Art, LosAngeles, March 15 - May 15, 1994, Kölnischer Kunstverein, June 22 - September 30, 1994, Museé d'Art de la Ville de Paris, January 31 - April 17, 1995, Museo Nacional de Arte Reina Sofia, Madrid]