Polke, Sigmar; Rowell, Margit; Semff, Michael; Curiger, Bice; Hamburger Kunsthalle; Exhibition Sigmar Polke. Works on Paper 1963 - 1974 (1999 : New York, NY; Hamburg)
Rowell, Margit; Semff, Michael; Curiger, Bice; Polke, Sigmar; The Museum of Modern Art (New York, NY); Exhibition Sigmar Polke. Works on Paper 1963 - 1974 (1999 : New York, NY; Hamburg)