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2. N. Geru, Metallic Materials-structure, Properties, Usefulness, Ed. Tehn., Bucharest, 1985 (in Romanian).
3. M.A. Raoof, A. Naeem, R. Zaghloul, A.F. Abdul-Fattah, M.A. Obeid,J. Radioanal. Chem., 60 (1980) 273.
4. F. Oprea, D. Taloi, Al. Ivanescu, I. Constantin, R. Roman, Theory of Metallurgical Processes, Ed. Didactica si Pedagogica, Bucharest, 1984 (in Romanian).
5. I. Tripsa, C. Pumnea, Dezoxidation of Steels, Ed. Tehn., Bucharest, 1981 (in Romanian).