HANUM, F. F.; RAHAYU, A. Studi pemanfaatan dan metode pemisahan silika dari coal fly ash. Open Science and Technology, [S. l.], v. 2, n. 1, p. 26–32, 2022. DOI: 10.33292/ost.v2i1.44. Disponível em: https://opscitech.com/journal/article/view/44. Acesso em: 22 jan. 2026.