1. I. D. Kashcheev, K. K. Strelov, and P. S. Mamykin, Refractory Chemical Technology [in Russian], Intermet Inzhiniring, Moscow (2007).
2. E. I. Mogilevskii, “Manufacturing technology and testing of ceramic filters for precision alloys,” Ogneupory Tekhn. Keram., No. 1, 43 – 45 (2000).
3. A. V. Belyakov, L. A. Belyakova, N. N. Buchilin, and E. E. Stroganova, RF Patent 2408741, MPK C 22 1/08, B 22 F 3/11, Method for preparing highly porous material, Publ. 01.102.011, Byul. No. 1.