1. Murray, HH, “Clay.” In: Hagemeyer, RA (ed.) Pigments for Paper. Tappi Press, Atlanta (1997)
2. Bergaya, F, Lagaly, G (eds.), Handbook of Clay Science. Developments in Clay Science, 2nd ed., Vol. 5. Elsevier, Amsterdam (2013)
3. Lehtinen, E, “Pigment Coating and Surface Sizing of Paper.” In: Gullichsen, J, Paulapuro, H (eds.) Paper Making Science and Technology, Book 11. Fapet Oy, Helsinki (2000)
4. Kogler, W, Auhorn, WJ, “Coating of Paper and Board.” In: Holik, H (ed.) Handbook of Paper and Board. Wiley, Weinheim (2006)
5. Sherbiny, S, Xiao, H, “Characteristics of Clay and GCC Pigment Coatings Containing Synthetic Polymeric Thickeners.” Appita J., 58 116–121 (2005)