Study on cenosphere recovery from coal ash. Himi, him. tehnol. hùrèèlèngijn èrdèm šinžilgèènij bùtèèl [Internet]. 2025 Dec. 25 [cited 2026 Jul. 15];13(13):44-52. Available from: https://mongoliajol.info/index.php/BICCT/article/view/4580