00497naa#a2200169#i#4500001001300000005001700013011001400030100004100044101000800085102000700093200007600100210007000176215001000246608002700256700001800283856002600301EN\\bibl\77120240428100139.7##a1993-7768##a20131211b2013####ek#y0engy0150####ca0#aRUS##aRU1#aRiver Cruises Market in Russia: Problems and SolutionseJournal article1#aCHERKIZOVOcRussian State University of Tourism and Serviced2013##a8 с.##aJournal article2local#1aVoytgMarina 4#aphilosoph.editorum.ru