1. Geochemistry of hydrothermal Ore Deposits;Barnes,1992
2. Bayer, K.Y., Darstellung von Thonerdehydrat und Alkalialuminat, German Patent 65, 1892, 604.
3. Note sur l'action de l'hydrogène à différentes pressions sur quelques dissolutions metalliques;Beketoff;Compte Rendu Académie de Sciences, Paris,1859
4. The commercial status of pressure leaching technology;Berezowsky;Journal of Minerals, Metals and Materials Society,1991
5. Hydrothermal synthesis of light-weight insulating material using fly-ash;Borst,1991