Franiv, V. A., Z. Czapla, S. Dacko, A. V. Franiv, and O. S. Kushnir. “Structural Transformations in Tl4HgI6 and Tl4CdI6 Crystals As Evidenced by Dielectric Properties and Conductivity”. Ukrainian Journal of Physics, vol. 59, no. 11, Oct. 2018, p. 1078, doi:10.15407/ujpe59.11.1078.