00613naa#a2200193#i#450# EN\\bibl\67936 20241122193200.5 2218-130X 20130325b2013####ek#y0engy0150####ca RUS RU Analysis of field and laboratory methods of testing PVC structural units after the fire Journal article Saint-Petersburg Saint-Petersburg University of State Fire Service of Emercom of Russia 2013 4 с. Journal article local Berov K K Belchina U N Sharapov S V journals.igps.ru