ROBERT, U. W.; ETUK, S. E.; AGBASI, O. E.; UMOREN, G. P. .; AKPAN, S. S. .; NNANNA, L. A. Hydrothermally-calcined waste paper ash nanomaterial as an alternative to cement for clay soil modification for building purposes. Acta Polytechnica, [S. l.], v. 61, n. 6, p. 749–761, 2021. DOI: 10.14311/AP.2021.61.0749. Disponível em: https://ojs.cvut.cz/ojs/index.php/ap/article/view/7289. Acesso em: 6 may. 2024.