Mills, John S. and Perry Smith, eds. Cleaning, Retouching, and Coatings: Technology and Practice for Easel Paintings and Polychrome Sculpture. London: International Institute for Historic and Artistic Works, 1990.

Mills, John S. and Perry Smith, eds. Cleaning, Retouching, and Coatings: Technology and Practice for Easel Paintings and Polychrome Sculpture. London: International Institute for Historic and Artistic Works, 1990.