OKLIMA, A. M.; SUDARSONO, .; ISKANDAR, .; SURYANINGTYAS, D. T. Utilizing Coal Ash and Humic Substances as Soil Ameliorant on Reclaimed Post-Mining Land. JOURNAL OF TROPICAL SOILS, [S. l.], v. 19, n. 3, p. 161–169, 2015. DOI: 10.5400/jts.2014.v19i3.161-169. Disponível em: https://journal.unila.ac.id/index.php/tropicalsoil/article/view/212. Acesso em: 27 jul. 2025.