00573naa#a2200181#i#450# EN\\bibl\66628 20251208201144.1 1998-8990 20150325b2015####ek#y0engy0150####ca RUS RU REDUNDANCY IN THE MANAGEMENT OF PRODUCTION SYSTEMS WITH UNPREDICTABLE RISKS Journal article Saint-Petersburg Saint-Petersburg University of State Fire Service of Emercom of Russia 2015 6 с. Journal article local Stebunov S V Vlasova T V journals.igps.ru