00558naa#a2200181#i#450# EN\\bibl\67997 20241128014837.4 2218-130X 20130925b2013####ek#y0engy0150####ca RUS RU THE MULTILEVEL SYSTEM OF INDEXES OF THE INFORMATION SECURITY Journal article Saint-Petersburg Saint-Petersburg University of State Fire Service of Emercom of Russia 2013 3 с. Journal article local Artamonov A S Ivanov A Y journals.igps.ru