00520naa#a2200169#i#450# EN\\bibl\80562 20250428100711.1 2076-0655 20131225b2013####ek#y0engy0150####ca RUS RU Bismuth-containing low-melting glasses and the structural state of bismuth in them Journal article Moscow Individual Entrepreneur Svetlana Vasilievna Samchenko 2013 3 с. Journal article local Bobkova N M tsilicates.ru