00552naa#a2200181#i#4500001001500000003001700015005001700032011001400049100004100063101000800104102000700112200008100119210007000200215001000270608002700280700002300307856004000330EN\\bibl\12161/en/manage/index20251116143659.7##a1995-042X##a20160921b2016####ek#y0engy0150####ca0#aRUS##aRU1#aTourism product differentiation within the domestic tourismeJournal article1#aCHERKIZOVOcRussian State University of Tourism and Serviced2016##a9 с.##aJournal article2local#1aKonovalovagElena 4#asurgu.editorum.ruu/en/manage/index