S. A. Klimin, P. S. Berdonosov, and E. S. Kuznetsova, Quasi-doublets of non-Kramers Ho³⁺ ion and magnetic ordering of holmium francisite-analog Cu₃Ho(SeO₃)₂O₂Cl, Low Temp. Phys. 47, (2021) [Fiz. Nizk. Temp. 47, 1119-1127, (2021)] DOI: https://doi.org/10.1063/10.0007075.