@proceedings{sgem201742,
  title = {17th International Multidisciplinary Scientific GeoConference SGEM 2017, Energy and Clean Technologies, Vol. 17, Book 4, Volume 2},
  author = {International authors},
  year = {2017},
  publisher = {STEF92 Technology},
  isbn = {},
  doi = {10.5593/sgem2017/42}
}