1. M. P. Braun, Mikrolegirovanie Stali (Kiev: Naukova Dumka: 1982) (in Russian).
2. Ya. E. Gol'zatein and V. G., Mizin, Modifitsirovanie i Mikrolegirovanie Chuguna i Stali (Moscow: Metallurgiya: 1986) (in Russian).
3. E. M. Savitskii, Redkie Metally i Splavy (Moscow: Dom Tekhniki: 1959) (in Russian).
4. A. Prochovnick, Literature Search Relating to Metallurgical Applications of the Rare Earths (Pompton Plains: Davison Chemical Company: 1958), No. 1.
5. V. M. Azhazha, B. V. Borts, A. F. Vanzha, N. D. Rybal'chenko, and E. P. Shevyakova, Voprosy Atomnoy Nauki i Tekhniki, No. 1: 195 (2008) (in Russian).