Sigmar Polke works on paper, 1963-1974 ; [... on the occasion of the exhibition "Sigmar Polke: Works on Paper 1963-1974" ... Museum of Modern Art, New York, April 1 - June 16, 1999 ... Hamburger Kunsthalle, July 15 - October 17, 1999] - Rowell, Margit 1937-; Semff, Michael 1950-; Curiger, Bice 1948- (Abrams [u.a.], 1999)