00634naa#a2200229#i#450# EN\\bibl\80741 20241121194228.4 2076-0655 20161225b2016####ek#y0engy0150####ca RUS RU Phase formation in the system Y2O3-Al2O3-SiO2 Journal article Moscow Individual Entrepreneur Svetlana Vasilievna Samchenko 2016 8 с. Journal article local Lebedeva Yu E Popovich N V Orlova L A Chaynikova A S Vaganova M L Kachaev A A tsilicates.ru