M. O. Azarenkov and T. V. Sukhareva, Continuous and topological phase transitions in the Josephson medium of granular high-temperature superconductor DyBa₂Cu₃O_7–δ, Low Temp. Phys. 52, (2026) [Fiz. Nyzk. Temp. 52, 434-442, (2026)].