TY - CPAPER AU - A. Shoumkova AU - V. Stoyanova TI - HEAVY AND TOXIC ELEMENTS DISTRIBUTION IN MAGNETICALLY SEPARATED FRACTIONS FROM COAL FLY ASHES T2 - 10th International Multidisciplinary Scientific GeoConference SGEM2010 PY - 2010 SP - 597 EP - 604 PB - SGEM Scientific GeoConference ER -