00519naa#a2200181#i#450# EN\INFRA-M\bibl\5347 20240423170102.2 2308-4898 20150417b2015####ek#y0engy0150####ca RUS RU The Choice of Intermediary When Solving the First Positional Tasks Journal article Moscow INFRA-M Academic Publishing LLC. 2015 4 с. Journal article local Ivanov G. Dmitrieva I. M. riorpub.com