Permana, E., M. Damris, I. Lestari, L. Marlinda, M. R. B., R. Fadli, and A. N. Hidayat. “Synthesis and Characterization of Bentonite/Graphene/Chitosan Nanocomposites”. Proceeding International Conference on Religion, Science and Education, vol. 5, June 2026, pp. 1559-63, http://sunankalijaga.org/prosiding/index.php/icrse/article/view/1889.