Ostafiychuk, B.K., et al. “Magnetic and Dielectric Properties of Mg Substituted Nanocrystalline Li Ferrite Obtained by the Method Auto-Ignition Sol-Gel: Array”. Physics and Chemistry of Solid State, vol. 18, no. 1, Mar. 2017, pp. 102-10, doi:10.15330/pcss.18.1.102-110.