00669naa#a2200241#i#450# EN\\bibl\47019 20240519041232.7 1681-1208 20040825b2004####ek#y0engy0150####ca RU Activity of Elbrus Volcano North Caucasus Journal article Moscow Geophysical Center of the Russian Academy of Sciences 2004 12 с. Journal article local Gurbanov A G Sobisevich A L Sobisevich L E Nechaev Yu N Arbuzkin V N Prutskii N I Trofimenko E A Grekov I I rjes.ru