00524naa#a2200193#i#450# EN\\bibl\80679 20241122033725.5 2076-0655 20150325b2015####ek#y0engy0150####ca RUS RU High-strength cellular concrete Journal article Moscow Individual Entrepreneur Svetlana Vasilievna Samchenko 2015 4 с. Journal article local Elesin M A Berdov G I Umnova E V tsilicates.ru