1. Biotite flakes: Alteration by chemical and biological treatment;Boyle;Science,1967
2. The microfabric of petroplinthite;Eswaran,1973
3. Characterization of clay minerals by infra-red spectroscopy;Farmer,1968
4. Altération des granites dans les régions intertropicales sous différents climats;Furtado,1968
5. Chemical weathering of biotite-plagioclase gneiss;Grant;Clays Clay Minerals,1964