1. French Pat. No. 1278629, Nov. 6, 1961.
2. French Pat. No. 1500534, Nov. 3, 1967.
3. Yu. A. Sidorenko, Ya. A. Treiman, and Yu. Yu. Sakulevich, “Material for magnetoabrasive machining,” Inventor's Certificate No. 476970, Byull. Izobret., No. 26 (1975).
4. V. A. Blyumberg, Yu. M. Baron, Z. I. Kremen', and B. P. Grokholskii, “Abrasive material for magnetoabrasive machining,” Inventor's Certificate No. 234184, Byull. Izobret., No. 3 (1969).
5. Yu. M. Baron, Technology of Abrasive Machining in a Magnetic Field [in Russian], Mashinostroenie, Leningrad (1975).