Guercino : Master Painter of the Baroque (exhibition Washington, National Gallery of Art, 15.03 - 17.05.1992 ; Bologna, Pinacoteca Nazionale, 06.07 - 10.11.1991 ; Frankfurt, Schirn Kunsthalle, 02.12.1991 - 09.02.1992) / - Mahon, Denis (National Gallery of Art (Washington),, 1992)