Venugopal, J. S., B. V. Hirannaiah, and S. K. Majumder. 1982. “Dehydroxylation and Dehydration As Parameters For Characterisation of Clays - Part II: Kaolinites, Pyrophyllite and Talc”. Journal of Geological Society of India 23 (6):300-306. https://geosocindia.com/index.php/jgsi/article/view/65082.