1. Infra-red Spectra of Reference Clay Minerals American Petroleum, Institute Project 49;Adler,1950
2. Differences Between the Infra-red Absorption Spectra of Some Clays and Related Minerals;Auskern,1955
3. Spectroscopic Study of Base Exchange Materials;Buswell;J. Amer. Chem. Soc.,1941
4. Replacement of Adsorbed Phosphate From Kaolinite by Fluoride;Dickman;Soil Sci.,1941