TY - CPAPER AU - International authors TI - 17th International Multidisciplinary Scientific GeoConference SGEM 2017, Ecology, Environmental Economics, Education, and Legislation, Vol. 17, Book 5, Volume 4 T2 - International Multidisciplinary Scientific GeoConference SGEM 2017 PY - 2017 DO - 10.5593/sgem2017/54 PB - STEF92 Technology ER -