@inproceedings{sgem201853,
  title = {18th International Multidisciplinary Scientific GeoConference SGEM 2018, Ecology, Environmental Economics, Education, and Legislation, Vol. 18, Issue 5.3},
  author = {International authors},
  booktitle = {International Multidisciplinary Scientific GeoConference SGEM 2018},
  year = {2018},
  pages = {},
  publisher = {STEF92 Technology},
  doi = {10.5593/sgem2018/5.3}
}