1. G. Savage, A Concise History of Bronzes, Thomes & Hudson, London, 1968.
2. D. Strong, D. Brown (Eds.), Roman Crafts, Duckworth, London, 1976.
3. G.M.A. Hanfmann, Roman Art, New York Graphic Society, Greenwich, CT, USA.
4. Ch. Detzner, Email, Buch-Kunstverlag Ettal, Germany, 1968 (in German).
5. Should all surfaces be reconstructed?