OL’KHOVIK, L. P.; BORISOVA, N. M.; GOLUBENKO, Z. V.; MOZUL, K. A.; SIZOVA, Z. I.; SHURINOVA, E. V. Magnetic anisotropy of an ensemble of Ca-substituted barium hexaferrite nanoparticles. Journal of V. N. Karazin Kharkiv National University. Series Physics, v. 1135, n. 21, p. 44-48, 3 Jan. 2017.