TY - CPAPER AU - Mila Chilikova-Lubomirova TI - URBAN ECOSYSTEMS FUNCTION AND SERVICES. CHALLENGES WITH REGARD TO THE ENVIRONMENTAL CONDITIONS T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 17th International Multidisciplinary Scientific GeoConference SGEM2017, Ecology, Economics, Education and Legislation PY - 2017 SP - 1063 EP - 1070 DO - 10.5593/sgem2017/51/s20.139 PB - STEF92 Technology ER -