Kryzhanovskyi, V. ., S. . Serhiienko, D. . Chernov, and V. . Kryzhanovsky. “Listening to NFC at Higher Harmonic Frequencies”. Radiotekhnika, vol. 1, no. 204, Apr. 2021, pp. 99-104, doi:10.30837/rt.2021.1.204.11.