00610naa#a2200205#i#450# EN\\bibl\80676 20241124015020.7 2076-0655 20150325b2015####ek#y0engy0150####ca RUS RU Magnesia cement hydration products, modified by the addition of amorphous silica Journal article Moscow Individual Entrepreneur Svetlana Vasilievna Samchenko 2015 6 с. Journal article local Tyukavkina V V Kasikov A G Gurevich B I Semushin V V tsilicates.ru