1. Sepiolite: properties and uses;Alvarez,1984
2. Structure of layer silicates;Bailey,1980
3. Structure of attapulgite;Bradley;Am. Mineral,1940
4. Struktur und entstehung des sepioliths;Brauner;Tschermak's Mineral. Petrogr. Mitt.,,1956
5. X-ray and electron diffraction data for sepiolite;Brindley;Am. Mineral.,1959