1. Yu. A. Geller, Tool Steels [in Russian], Mashinostroenie, Moscow (1971).
2. É. É. Kol'man-Ivanov and K. A. Salazkin, Tableting Machines [in Russian], Mashinostroenie, Moscow, (1966).
3. S. N. Nosovitskaya, E. E. Borzunov, and R. M. Safiulin, The Production of Tablets, Meditsina, Moscow (1968).
4. M. D. Mashkovskii, Drugs [in Russian], Kartya Moldavenyaské, Kishinev (1961).