00570naa#a2200193#i#450# EN\\bibl\68551 20241122091841.5 2218-130X 20190325b2019####ek#y0engy0150####ca RUS RU BLOCKCHAIN: NEW OPPORTUNITIES MANAGEMENT PRACTICE Journal article Saint-Petersburg Saint-Petersburg University of State Fire Service of Emercom of Russia 2019 8 с. Journal article local Myachin D A Onov V A Nefed S A journals.igps.ru