@inproceedings{sgem2017s03092,
  title = {RECOVERY AND RECYCLING OF CRITICAL METALS - A STRATEGIC PRIORITY FOR EUROPEAN UNION},
  author = {Alina BUTU and Marian Butu and Georgeta Fidler and Steliana Rodino},
  booktitle = {SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 17th International Multidisciplinary Scientific GeoConference SGEM2017, Science and Technologies in Geology, Exploration and Mining},
  year = {2017},
  pages = {725-732},
  publisher = {STEF92 Technology},
  doi = {10.5593/sgem2017/13/s03.092}
}