00497naa#a2200169#i#450# EN\INFRA-M\bibl\15703 20241001085312.2 2500-0527 20170306b2017####ek#y0engy0150####ca RUS RU Social advertising for illiquid scope of persons or for core audience? Journal article Moscow INFRA-M Academic Publishing LLC. 2017 5 с. Journal article local Golenkova Zinaida zh-szf.ru