1. Bihuniak, P.P., Calabrese, A., Erwin, E.M.: Effect of trace impurity levels on the viscosity of vitreous silica. Journ. Am. Ceram. Soc. 66 (1983)
2. Praca zbiorowa: Technologia szkła. Arkady. Warszawa (1972)
3. Hrma, P.: Effects of surfaces forces in glass technology. Glass Technol. 23 (1982)
4. Hahmann, P., Teschner, R., Flegler, R., Haigh, M.: Li2O-Containing Glass Fibre. Glas-Ingenieur 1, 44–49 (2001)
5. Shartsis, L., Capps, W.: Surface tension of molten alkali borates. Journ. Am. Ceram. Soc. 35 (1952)