@inproceedings{sgem2009paper,
  title = {COAL FLY ASH BENEFIT AND ITS UTILIZATION IN CONCRETE},
  author = {J. Junak and N. Stevulova and A. Sicakova and A. Estokova},
  booktitle = {9th International Multidisciplinary Scientific GeoConference SGEM2009},
  year = {2009},
  pages = {465-470},
  publisher = {SGEM Scientific GeoConference},
  doi = {}
}