1. J.W. Wang, J. Han, China Molybdenum Industry, 27 (1)(2003)43-45.
2. Z.C. Xu, P. Zhang, China Molybdenum Industry, 25 (4)(2001)54-57.
3. J. Han, China Molybdenum Industry, 32 (2)(2008) 55-57.
4. W.C. Li, Chinese Journal of Nonferrous Metals, (4) (2007)41-48.
5. J.L. Tang, L.X. Tang, J.H. Luo, China Molybdenum Industry, 34 (4)(2010) 21-22.