@inproceedings{sgem2017s04127,
  title = {RECOVERY OF RARE EARTH ELEMENTS FROM COAL COMBUSTION FLY ASHES},
  author = {Henryk Swinder and Barbara Bialecka and Andrzej Jarosinski},
  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 = {995-1002},
  publisher = {STEF92 Technology},
  doi = {10.5593/sgem2017/11/s04.127}
}