TY - CPAPER AU - Emilia Karamanova AU - Alexander Karamanov TI - CERAMIC MATERIALS BASED ON HIGH AMOUNTS OF INDUSTRIAL WASTESE T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 21st SGEM International Multidisciplinary Scientific GeoConference Proceedings 2021, Energy and Clean Technologies PY - 2021 SP - 139 EP - 146 DO - 10.5593/sgem2021/4.1/s18.27 PB - STEF92 Technology ER -