H. Ban, D. Gal, A. Kohutych, and A. Molnar, Low-temperature anomalies of the dielectric permeability of Sn₂P₂S₆ crystals, Low Temp. Phys. 50, 56–65, (2024) [Fiz. Nyzk. Temp. 50, 59–69, (2024)] DOI: https://doi.org/10.1063/10.0023893.