PETKOV, V.; VALOV, R.; TEODOSSIEV, D.; YANKOVA, I. A Possibility to Decrease the Sintering Temperature of Corundum Ceramics. The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science, v. 34, n. 3, p. 58-60, 15 set. 2011.