00490naa#a2200181#i#4500001001900000005001700019011001400036100004100050101000800091102000700099200005100106210004100157215001000198608002700208700003300235700002400268856001600292EN\RIOR\bibl\1073320240506110819.1##a2409-6024##a20160403b2016####ek#y0engy0150####ca0#aRUS##aRU1#aTHE GENESIS OF CLUSTER THEORYeJournal article1#aMoscowcPublishing Center RIORd2016##a6 с.##aJournal article2local#1aGuskovagNadezhda Dmitrievna#1aSkvortsovgEvgeniy 4#ariorpub.com