B. North,“Global Trends in Hard Materials”, Proceedings of the 16th International Plansee Seminar, Vol.2, Reutte, Plansee AG,(2005)1-8.
Suzuki H et al. Cemented carbides and sintered hard materials. Tokyo: Maruzen;(1986)
N. Matsuoka, Y. Doi and K. Hayashi,“A Consideration on Grain Growth in WC-Co Fine Grained Hardmetal by Numerical Calculation Based on Multi-Grain Size Model”, J. Jpn. Soc. Powder Powder Metallurgy, 45(2001)544-552.