@proceedings{sgem202012,
  title = {20th International Multidisciplinary Scientific GeoConference SGEM 2020, Science and Technologies in Geology, Exploration and Mining, Vol. 20, Issue 1.2},
  author = {International authors},
  year = {2020},
  publisher = {STEF92 Technology},
  isbn = {},
  doi = {10.5593/sgem2020/1.2}
}