Investigations into effective fly ash used in concrete. Journal of Civil Engineering and Management, [S. l.], v. 10, n. 4, p. 303–309, 2004. DOI: 10.3846/13923730.2004.9636323. Disponível em: https://journals.vilniustech.lt/index.php/JCEM/article/view/9000. Acesso em: 11 may. 2025.