1. The X-ray Identification and Crystal Structures of Clay Minerals;Brindley,1961
2. Electrochemical Properties of Na–Attapulgite
3. The surface energy of palygorskite
4. L.I. Vico, Estudio de las propiedades superficiales de filosilicatos: Sepiolita, Paligorskita y Saponita. Tesis doctoral, Departamento de Química, Universidad Nacional del Sur, Bahía Blanca, Argentina, 2004, p. 139.
5. Physical Adsorption of Gases;Young,1962