TY JOUR TI ORGANIZATIONAL AND ECONOMIC PRINCIPLES OF DESIGN, DEVELOPMENT AND IMPROVEMENT OF SUBURBAN WALKING TRAILS KW hiking KW walking KW walking trail KW hiking route KW suburban trails KW neighborhood trails KW trail design KW recreational walking KW railway transport KW suburban transportation KW sustainable tourism KW regional tourism JO Services in Russia and abroad AU Ilkevich, S.. PY 2017 IS 11 PB Russian State University of Tourism and Service