00594naa#a2200205#i#450# EN\\bibl\2943 20240519022103.7 1995-042X 20140626b2014####ek#y0engy0150####ca RUS RU Systematization of cosmic services Journal article CHERKIZOVO Russian State University of Tourism and Service 2014 10 с. Journal article local Lukyashchenko Mikhail Zaichko Valeriy Zhiganov Aleksandr Maksimov Aleksandr rguts.editorum.ru