1. Amorphous material;Douglas,1972
2. Crystallization of melted rocks;Kopecký,1959
3. Rubnerová J. Thermomechanical properties of inorganic fibers. Diploma work, TU Liberec; 1996
4. Militky J et al. Proceedings of the International Conference on Special Fibers, Lodz; 1997
5. Basalts and phase diagrams;Morse,1980