Kum-onsa, P., N. Chanlek, M. Takesada, P. Srepusharawoot, and P. Thongbai. “(La3+ Mg2+) codoped BiFeO3 nanopowders: Synthesis, characterizations, and giant dielectric relaxations”. Engineering and Applied Science Research, vol. 48, no. 6, July 2021, pp. 766-72, https://ph01.tci-thaijo.org/index.php/easr/article/view/244868.