S. . Wang, X. . Yu, H. . Gao, and X. . Chen, “Hexagonal Ferrite MFe12O19 (M=Sr, Ba, Cu, Ni, Pb) Based Photocatalysts: Photoluminescence, Photocatalysis and Applications”, J. Environ. Sci. Eng. Technol., vol. 10, pp. 52–69, Dec. 2022.