1. Schedler W. Hartmetall für den Praktiker, VDI-Verlag GmbH, Düsseldorf, 1988
2. Fry PR. Master Thesis, University of Witwatersrand, Johannesburg, South Africa, 1982
3. Schleinkofer U. Doctorate Thesis, University of Erlangen-Nürnberg, Erlangen, Germany, 1995
4. Brookes KJA. World directory and handbook of hard metals. Int. Carb. Data, East Barnet, Hers., Great Britain, 1982
5. Suresh S. Fatigue crack growth in brittle materials. Journal of Hard Materials 1991;2:29–54