V. Yu. Lyakhno, O. G. Turutanov, A. P. Boichenko, A. P. Shapovalov, A. A. Kalenyuk, and V. I. Shnyrkov, Hybrid shield for microwave single-photon counter based on a flux qubit, Low Temp. Phys. 48, (2022) [Fiz. Nyzk. Temp. 48, 254-258, (2022)] DOI: https://doi.org/10.1063/10.0009541.