R. A. Stepanov, P. G. Frick, and D. D. Sokoloff, “Coupling of mean-field equation and shell model of turbulence in the context of galactic dynamo problem”, ВМСС, vol. 1, no. 4, pp. 97–108, Apr. 2008, doi: 10.7242/1999-6691/2008.1.4.43.