Dwandaru, Wipsar Sunu Brams, Oktiana Lusi Priyani, Bagas Prakoso, Rhyko Irawan Wisnuwijaya, Iman Santoso, and Arif Rahman. 2018. “UV-VISIBLE OPTICAL ABSORBANCE OF GRAPHENE OXIDE IN COPPER IONIC LIQUID SYNTHESIZED VIA ELECTROCHEMICAL METHOD ASSISTED BY A COPPER COIL”. Spektra: Jurnal Fisika Dan Aplikasinya 3 (2):85-92. https://doi.org/10.21009/SPEKTRA.032.02.