00509naa#a2200169#i#4500001001400000005001700014011001400031100004100045101000800086102000700094200008300101210007000184215001000254608002700264700001800291856003000309EN\\bibl\142020241226112525.4##a1999-5644##a20140131b2014####ek#y0engy0150####ca0#aRUS##aRU1#aThe Rationale for Distance Learning in the Russian FederationeJournal article1#aCHERKIZOVOcRussian State University of Tourism and Serviced2014##a4 с.##aJournal article2local#1aIsaevgRoman 4#avestnik-rguts.editorum.ru