AGO ATOSHI , M. ., and JOHNSON GANI. “CHARACTERIZATION OF HETEROGENOUS CATALYST PRODUCED BY PHYSICAL ACTIVATION OF Cocos Nucifera SHELL WASTE”. BIMA JOURNAL OF SCIENCE AND TECHNOLOGY (2536-6041), vol. 7, no. 02. 1, Aug. 2023, pp. 113-2, doi:10.56892/bima.v7i02. 1.463.