1. A. A. Appen,The Chemistry of Glass [in Russian], Moscow, Leningrad (1974).
2. M. M. Shults,Inorganic Glass-Forming Systems [in Russian], Moscow (1970).
3. G. Rowson,Inorganic Glass Forming Systems [Russian translation], Moscow (1970).
4. P. I. Buler, ?On the thermodynamic criterion of vitrification in a supercooled liquid,?Zh. Fiz. Khim.,60(11), 2841?2844 (1986).
5. N. N. Ermolenko, ?On the possibility of glass formation in oxide systems? in:Physicochemical Foundations and Scientific and Engineering Progress in the Technology of Glass and Glass Ceramic Materials with the Use of Secondary Raw Materials [in Russian], Moscow (1987), pp. 77 ? 88.