00594naa#a2200193#i#450# EN\INFRA-M\bibl\5093 20260318033241.3 2712-9640 20150617b2015####ek#y0engy0150####ca RUS RU On the origin of frequency modulation of serpentine emission Journal article Moscow INFRA-M Academic Publishing LLC. 2015 5 с. Journal article local Guglielmi Anatol Vladimirovich Potapov Alexander Sergeevich Dovbnya Boris Viktorovich iszf.editorum.ru