A. Kharlampieva, E. Maklakova, E. Zhigunov. "THE MODERN MARKET OF HOTEL SERVICES OF SAINT PETERSBURG AGGLOMERATION." 5th International Multidisciplinary Scientific Conference on Social Sciences and Arts SGEM 2018 (2018): 817-824. https://doi.org/10.5593/sgemsocial2018/1.4/S04.105