1. R.A. Gill, P. Bethlehem, N.D. Sanders, N.J. Somerville, Precipitated calcium carbonate–cationic starch binder as retention aid system for papermaking, USA Patent (1990) 4892590.
2. Modification of papermaking grade fillers: a brief review;Shen;BioResources,2009
3. Paper's appearance: a review;Hubbe;BioResources,2008
4. Energy saving in papermaking through filler addition;Dong;Ind. Eng. Chem. Res.,2008
5. Filler engineering for papermaking: comparison with fiber engineering and some important research topics;Shen;BioResources,2010