D. Hurova and O. Dolbin, IV International Scientific Conference “Condensed Matter and Low Temperature Physics 2024” (CM<P 2024) Part II of the Special Issue (FNT/LTP No. 1, 2025), Low Temp. Phys. 51, (2025) [Fiz. Nyzk. Temp. 51, 311-312, (2025)] DOI: https://doi.org/10.1063/10.0035809.