Sulistyo Rini, A., A. P. Aji, and Y. Rati. “Microwave-Assisted Biosynthesis of Flower-Shaped ZnO for Photocatalyst in 4-Nitrophenol Degradation”. Communications in Science and Technology, Vol. 7, no. 2, Dec. 2022, pp. 135-9, doi:10.21924/cst.7.2.2022.937.