TY - CPAPER AU - International authors TI - 18th International Multidisciplinary Scientific GeoConference SGEM 2018, Ecology, Environmental Economics, Education, and Legislation, Vol. 18, Issue 5.3 T2 - International Multidisciplinary Scientific GeoConference SGEM 2018 PY - 2018 DO - 10.5593/sgem2018/5.3 PB - STEF92 Technology ER -