1. Properties of boride-based materials and other refractory compounds;Portnoy,1960
2. On the possibility of tungsten borides sintering with nickel;Kiparisov;Izv. Vyssh. Uchebin. Zaved. Tsvetn. Metall.,1970
3. Production of ceramic metal hard alloys based on chromium, titanium and tungsten borides;Iskoldskiy;Zh. Prikl. Khim.,1957
4. Borides and aluminides — new refractory hard metals;Everhard;Mater. Methods,1954
5. New materials for hot molding;Campbell;Mater. Methods,1950