1. Shefov, N.N., Semenov, A.I., and Khomich, V.Yu., Izluchenie verkhnei atmosfery—indikator ee struktury i dinamiki (Radiation of the Upper Atmosphere—An Indicator of Its Structure and Dynamics), Moscow: GEOS, 2006.
2. Perminov, V.I., Semenov, A.I., and Shefov, N.N., Geomagn. Aeronom., 1998, vol. 38, no. 6, p. 642.
3. Semenov, A.I. and Shefov, N.N., Geomagn. Aeronom., 1999, vol. 39, no. 4, p. 87.
4. Kossyi, I.A., Kostinsky, A.Yu., Matveyev, A.A., and Silakov, V.P., Plasma Source Sci. Technol., 1992, vol. 1, no. 3, p. 207.
5. Gordillo-Vazquez, F.J., J. Phys. D: Appl. Phys., 2008, vol. 41, no. 23, 234016.