1. A. Alvarez, Palygorskite-Sepiolite. Occurrences Genesis and Uses. Developments in Sedimentology, A. Singer and E. Galán (ed.), Elsevier, Amsterdam, 1984. Sepiolite: Properties and uses pp. 253–287.
2. E. Galán, Proceedings of the International Clay Conference. Denver 1985. The Clay Minerals Society, Bloomington, Indiana USA 1985, pp. 400.
3. R.C. MacKenzie, Differential Thermal Analysis, Academic Press, London 1970.
4. J.L. Martín Vivaldi and P. Fenoll, Differential Thermal Analysis, Academic Press London 1970, p. 553.
5. S. Caillere and S. Henin, The Differential Thermal Investigation of Clays, Mineralogical Soc. London 1957, p. 231.