1. Klepcha, K., Ash matters: Bottom ash wastes: A serious ecological problem, Expert, 2021. https://expert.ru/expert/2021/23/delo-v-shlake/. Cited August 15, 2022.
2. Korchagina, T.V., Rybak, V.L., and Rybak, L.L., Forming industrial and domestic wastes at Kemerovo region, Izv. Tulskogo Gos. Univ. Nauki Zemle, 2013, no. 1, pp. 15–21.
3. Salikhov, V.A., Preliminary estimation of rare and rare-earth metals in coals and waste of coal refinement, Voprosy sovremennoi nauki. Problemy, tendentsii i perspektivy. Materialy V Mezhdunarodnoi nauchno-prakticheskoi konferentsii (Issues of Modern Science: Problems, Trends, and Prospects: Proc. 5th Int. Sci.-Pract. Conf.), Kemerovo: Kuzbasskii Gos. Tekh. Univ. im. T.F. Gorbacheva, 2021.
4. Bottom ash waste. II: Economic profit of processing. https://ect-center.com. Cited August 15, 2022.
5. Bottom ash waste: Processing, utilization, and problems related with them. https://rcycle.net. Cited August 15, 2022.