1. Process for hydrothermal production of sodium silicate solution;Novotny R,1991
2. Method of manufacturing aqueous solutions of alkali polysilicates;Haase R,1976
3. Process for the manufacture of sodium silicate;Deabriges J,1982
4. Process for producing solutions of alkali metal silicate in a static reactor;Metzger J,1985
5. Hydrothermal production of clear sodium silicate solutions;Christophliemk P,1988