@inproceedings{sgem201921,
  title = {19th International Multidisciplinary Scientific GeoConference SGEM 2019, Geoinformatics, Remote Sensing, and Artificial Intelligence, Vol. 19, Issue 2.1},
  author = {International authors},
  booktitle = {International Multidisciplinary Scientific GeoConference SGEM 2019},
  year = {2019},
  pages = {},
  publisher = {STEF92 Technology},
  doi = {10.5593/sgem2019/2.1}
}