TY JOUR TI SYNERGY OF ACTIVE AND EDUCATIONAL TOURISM: OPPORTUNITIES FOR SMALL RUSSIAN CITIES KW active tourism; educational tourism; small cities; sustainable development; Russia JO Service & Tourism: Current Challenges AU Sheresheva , M.. AU SAVELIYEV, I.I. AU Oborin, M.S. PY 2017 IS 11 PB Russian State University of Tourism and Service