“A COMPREHENSIVE STUDY ON THE MICROSTRUCTURE AND OPTICAL PROPERTIES OF Fe3O4 NANOPARTICLES BY VARIATION OF TEMPERATURE AND NaOH CONCENTRATION”. JOURNAL ONLINE OF PHYSICS 5, no. 1 (December 29, 2019): 6-17. Accessed July 25, 2024. https://online-journal.unja.ac.id/jop/article/view/8166.