TY JOUR TI Silicate modulus as a structure determine criterion KW glass KW structure KW silicate modulus KW factor of structure connection KW standard isobaric-isothermic potential KW unit bond energy JO Technique and technology of silicates AU Medvedev, E.F. AU Melkonyan, R.G. PY 2016 IS 23 PB Individual Entrepreneur Svetlana Vasilievna Samchenko