E.Yu. Beliayev, V.A. Horielyi, and Yu.A. Kolesnichenko, Interplay of hopping conductivity and superconductivity in magnetic superconductor RuSr₂(Eu_1.5Ce_0.5)Cu₂O_10–δ, Low Temp. Phys. 46, (2020) [Fiz. Nizk. Temp. 46, 699-709, (2020)] DOI: https://doi.org/10.1063/10.0001240.