00578naa#a2200181#i#4500001002200000005001700022011001400039100004100053101000800094102000700102200008300109210005100192215001000243608002700253675007100280700003000351856001500381EN\INFRA-M\bibl\1661320241006103836.7##a2500-0527##a20170711b2017####ek#y0engy0150####ca0#aRUS##aRU1#aOn the problems and ways of increasing economic concentrationeJournal article1#aMoscowcINFRA-M Academic Publishing LLC.d2017##a4 с.##aJournal article2local##aЭкономика. Экономические науки. 33zRUS#1aBurganovgRais Abrarovich4#anaukaru.ru