(1)
Kurniawidi, D.; Saputra, K.; Ardianto, T.; Inayah, R.; Aminy, I. UV-Vis Spectroscopic Analysis for Band Gap Determination of Cobalt-Doped Magnetite (Fe2.5Co0.5O4) Nanoparticles Derived from Natural Iron Sand. KONSTAN - JURNAL FISIKA DAN PENDIDIKAN FISIKA 2026, 10, 115-125.