00474naa#a2200169#i#450# EN\INFRA-M\bibl\6815 20240720152748.6 1998-0701 20150817b2015####ek#y0engy0150####ca RUS RU Method activation end date in the past. direction:re Journal article Moscow INFRA-M Academic Publishing LLC. 2015 4 с. Journal article local Gadzhieva P. naukaru.ru