More info <A HREF="http://corporate.lubrizol.com/PressRoom/MediaCoverage/pdflibrary/tlt_techbeat_9_06.pdf?articleid=909&pagetitle=Understanding%20Calcium%20Sulfonate%20Thickeners" target="_blank">http://corporate.lubrizol.com/PressRoom/MediaCoverage/pdflibrary/tlt_techbeat_9_06.pdf?articleid=909...</A> <A HREF="http://www.rtvanderbilt.com/Apr06GMLNG.pdf" target="_blank">http://www.rtvanderbilt.com/Apr06GMLNG.pdf</A>