Prasetyo, P. “Investigation of Structure and Magnetic Properties of Polycrystalline La0.7Ba0.21Ca0.09Mn1-XNixO3 (x=0.1, 0.2, 0.3) by Sol Gel Method”. Indonesian Journal of Chemistry and Environment 3, no. 1 (May 19, 2021): 13–18. Accessed May 15, 2025. https://jurnal.uny.ac.id/index.php/ijoce/article/view/40817.