Budi, Esmar, Hadi Nasbey, Setia Budi, Erfan Handoko, Puji Suharmanto, Ranggi Sinansari, and Sunaryo Sunaryo. 2012. “KAJIAN PEMBENTUKAN KARBON AKTIF BERBAHAN ARANG TEMPURUNG KELAPA”. PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) 1 (1), 62 - 66. https://journal.unj.ac.id/unj/index.php/prosidingsnf/article/view/6154.