00599naa#a2200169#i#450# EN\\bibl\54742 20240826182037.1 2072-9502 20221025b2022####ek#y0engy0150####ca RU Systems analysis of factors causing forest fires in Northwestern Federal District Journal article Astrakhan Astrakhan State Technical University 2022 8 с. Journal article local Системный уровень. Системный анализ. 303.732 Ivanov Sergey Aleksandrovich vestnik.astu.org