1. Dévé, Ch., 1936, “Le Travail des Verres d’Optique de Précision”, Revue d’Optique, Paris; 1945, English translation “Optical Workshop Principles”, Adam Hilger, London
2. Twyman, F., 1952, “Prism and Lens Making”, Hilger and Watts, London
3. Maksutov, D.D., 1954, “Technologie der astronomischen Optik”, VEB Verlag Technik, Berlin (translation of the Russian edition Moscow, 1948)
4. Preston, F.W., 1922, Trans. Opt. Soc. London, 23, 141 and 150
5. Preston, F.W., 1926, Trans. Opt. Soc. London, 27, 181