Volkova Л. В., and Platunov А. В. “Rail Base Point Inspection Using the Mirror through Transmission Testing Technique on Multiple Reflections”. Vestnik IzhGTU Imeni M.T. Kalashnikova, vol. 22, no. 4, Dec. 2019, pp. 38-45, doi:10.22213/2413-1172-2019-4-38-45.