00601naa#a2200193#i#450# EN\\bibl\66705 20241129050135.5 1998-8990 20151225b2015####ek#y0engy0150####ca RUS RU Mathematical modeling of modern technical means of informing and warning Journal article Saint-Petersburg Saint-Petersburg University of State Fire Service of Emercom of Russia 2015 5 с. Journal article local Kalyakin A N Onov V A Chernyshov Yu Yu journals.igps.ru