TY - CPAPER AU - International authors TI - 19th International Multidisciplinary Scientific GeoConference SGEM 2019, Ecology, Environmental Economics, Education, and Legislation, Vol. 19, Issue 5.3 T2 - International Multidisciplinary Scientific GeoConference SGEM 2019 PY - 2019 DO - 10.5593/sgem2019/5.3 PB - STEF92 Technology ER -