Immobilization of Bacillus subtilis on Fly Ash-Based Geopolymers with Biochar as a Self Healing Material. Indonesian Journal of Chemical Science, [S. l.], v. 13, n. 3, 2024. Disponível em: https://journal.unnes.ac.id/journals/ijcs/article/view/1722. Acesso em: 5 dec. 2025.