1. R. R. Yusupov, «Digital signal processing device for automatic locomotive signaling with increased noise immunity», Ph.D. thesis, Samara: SamGAPS, 2003.
2. V. M. Lisenkov, Statistical theory of train traffic safety (VINITI RAN, Moscow, 1999), p. 332.
3. A. M. Bryleev, Yu. A. Kravtsov and A. V. Shishlyakov, Theory, arrangement and work (Transport, Moscow, 1978), p. 344.
4. Study of the Electromagnetic Environment in Electrified Railroad Sections
5. Concerning the Carrier Frequency Selection Method for Continuous Cab Signaling