1. Kieffer, R. and Benesovsky, F., Hartmetalle, Wien: Springer, 1965.
2. Shapoval, V.I. and Zhabenko, V.A., Sovremennoe sostoyanie i perspektivy razvitiya tsvetnoi metallurgii na predpriyatiyakh Ukrainskoi SSR (Nonferrous Metallurgy State of the Art and Prospects for the Plants of Ukrainian SSR), Kiev: Naukova dumka, 1989, p. 88.
3. Kozin, L.F. and Trefilov, V.I., Redkometall’naya promyshlennost’ Ukrainy. Problemy i perspektivy (Ukrainian Industry of Rare Metals: Problems and Prospects), Preprint of Inst. of Materials Science, Inst. of General and Inorganic Chemistry, Nat. Acad. Sci. of Ukraine, Kiev, 1997.
4. Pivovarov, M.N. and Vlasova, A.V., New Recycling Method for Waste Hard Alloy Lumps, Novaya Tekhnol., 2003, no. 1, p. 89.
5. Svoistva, poluchenie i primenenie tugoplavkikh soedinenii. Spravochnik (Properties, Production, and Application of Refractory Compounds), Kosolapova, T. Ya., Ed., Moscow: Metallurgiya, 1986.