Nasrul Arahman, Mukramah, Syawaliah, Teuku Maimun, and M. R. Bilad. “FABRICATION OF POLYETHERSULFONE MEMBRANES USING NANOCARBON AS ADDITIVE”. GEOMATE Journal, vol. 15, no. 50, June 2018, pp. 51-57, https://geomatejournal.com/geomate/article/view/947.