Bushkova, V.S. “Optical Properties of Ferrite Powders of NixCo1-xFe2O4 System ”. Physics and Chemistry of Solid State 16, no. 3 (September 15, 2015): 506–510. Accessed November 23, 2024. https://vps.pnu.edu.ua/index.php/pcss/article/view/1641.