A.L. Solovjov, V. B. Stepanov, and Yu. A. Kolesnichenko, Comparative analysis of the temperature dependences of the resistivity, pseudogap, and thermoelectric power in polycrystals YBa₂Cu₃O_7–δ with a decrease in the density of charge carriers, Low Temp. Phys. 47, (2021) [Fiz. Nizk. Temp. 47, 883-894, (2021)] DOI: https://doi.org/10.1063/10.0006060.