9Jorge C. Miranda-Trevinol, Cynthia A. Coles. Kaolinite properties, structure and influence of metal retention on pH. Applied Clay Science,2003,23:133 - 139.
10Cynthia A. Coles, Raymond N. Yong. Aspects of kaolinite characterization and retention of Pb and Cd. Applied Clay Science, 2002,22 : 39 - 45.