Temperature—Frequency Dependences of Dielectric Constants of Magnesium-Substituted Lithium Ferrite - B. K. Ostafiichuk; I. M. Hasiuk; L. S. Kaikan; V. V. Uhorchuk; P. P. Yakubovskyi; V. A. Tsap; Yu. S. Kaikan (Metallophysics and advanced technologies, 2014)