00640naa#a2200193#i#450# EN\\bibl\46848 /en/manage/index 20241127131736.3 1681-1208 20171025b2017####ek#y0engy0150####ca RU Improving the system of numerical simulation of volcanic ash propagation using the PUFF model Journal article Moscow Geophysical Center of the Russian Academy of Sciences 2017 5 с. Journal article local Malkovsky Sergey I Sorokin Aleksei A Korolev Sergey P test.editorum.ru /en/manage/index