Dwandaru WSB, Priyani OL, Prakoso B, Wisnuwijaya RI, Santoso I, Rahman A. UV-VISIBLE OPTICAL ABSORBANCE OF GRAPHENE OXIDE IN COPPER IONIC LIQUID SYNTHESIZED VIA ELECTROCHEMICAL METHOD ASSISTED BY A COPPER COIL. SPEKTRA [Internet]. 2018Aug.30 [cited 2025Apr.27];3(2):85 -92. Available from: http://103.8.12.212:33180/unj/index.php/spektra/article/view/7120