RAJBHANDARI, R.; SHRESTHA, L. K.; PRADHANANGA, R. R. Preparation of Activated Carbon from Lapsi Seed Stone and its Application for the Removal of Arsenic from Water. Journal of the Institute of Engineering, [S. l.], v. 8, n. 1-2, p. 211–218, 2011. DOI: 10.3126/jie.v8i1-2.5113. Disponível em: https://www.nepjol.info/index.php/JIE/article/view/5113. Acesso em: 20 sep. 2021.