00501naa#a2200169#i#450# EN\\bibl\80824 20250405165828.6 2076-0655 20190325b2019####ek#y0engy0150####ca RUS RU A hypothetical structure for the future table D. I. Mendeleev Journal article Moscow Individual Entrepreneur Svetlana Vasilievna Samchenko 2019 3 с. Journal article local Sarkisov Yu S tsilicates.ru