V.P. Dyakonov, E. Zubov, E. Aksimentyeva, K. Dyakonov, S. Piechota, and H. Szymczak, Low-temperature magnetic behavior of the organic-based magnet Na[FeO₆(C₁₀H₆N)₃], Low Temp. Phys. 40, (2014) [Fiz. Nizk. Temp. 40, 835-841, (2014)] DOI: https://doi.org/10.1063/1.4887064 .