1. V. A. Tverdislov, A. E. Sidorova, and L. V. Yakovenko, Biophysical Ecology (Moscow, 2011) [in Russian].
2. A. E. Sidorova and V. A. Tverdislov, “Urban ecosystems as nonlinear element of anthroposphere,” in Physical Problems of Ecology (Ecological Physics), (Moscow, 2010), Vol. 16, p. 287 [in Russian].
3. A. E. Sidorova, “Urban ecosystems as active media: autowave self-organization stability”, in Physical Problems of Ecology (Ecological Physics), (MSU, Moscow, 2007), Vol. 14, p. 293 [in Russian].
4. A. E. Sidorova and V. A. Tverdislov, “Qualitative model of urban ecosystems in the representation of active media,” Nauka Tekhnol. Razrab. 90(4), 3 (2011).
5. Fitz Hugh R.A., Biophys. J. 1, 445 (1961).