Almagul Ultarakova. "INVESTIGATIONS OF WASTE SLUDGE OF TITANIUM PRODUCTION AND ITS LEACHING BY NITRIC ACID." SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 19th SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings19th, Science and Technologies in Geology, Exploration And Mining, 2019, pp. 861-868. https://doi.org/10.5593/sgem2019/1.3/s04.111