1. Bartels, J., Potsdamer Erdmagnetische Kennziffern. 1. Mittelung, Zeitschr. Geophys., 1938, vol. 14:68, no. 78, pp. 699–718
2. Bud’ko, N.I., Zaitsev, A.N., Karpachev, A.T., Kozlov, A.N., and Filippov, B.P., Kosmicheskaya sreda vokrug nas (Space Environment) Troitsk: TROVANT, 2006.
3. Chui, C.K., An Introduction to Wavelets, Moscow: Mir, 2001.
4. Daubechies, I., Ten Lectures on Wavelets, Izhevsk: NITs Regulyarn. Khaot. Dinamika, 2001.
5. Kozlov, V.I. and Markov, V.V., Wavelet Image of the Fine Structure of the 11-Year Cycle Based on Studying Cosmic Ray Fluctuations during Cycles 20–23, Geomagn. Aeron., 2007, vol. 47, no. 1, pp. 56–65 [Geomagn. Aeron. (Engl. transl.), 2007, vol. 47, pp. 52–61].