1. N. L. Aleksandrov, F. I. Vysikailo, R. Sh. Islamov, et al., “Electron Distribution Function in an N2: O2 = 4: 1 Mixture,” Teplofiz. Vys. Temp. 19, 22–27 (1981a).
2. N. L. Aleksandrov, F. I. Vysikailo, R. Sh. Islamov, et al., “Calculation Model of Discharge in an N2: O2 = 4: 1 Mixture,” Teplofiz. Vys. Temp. 19, 485–490 (1981b).
3. L. P. Babich, “Bi-Stability of Electron Ensemble Interacting with a Dense Gas of Neutral Particles in an Electric Field. Appendix to the Thundercloud Field,” Teplofiz. Vys. Temp. 33(5), 659–662 (1995).
4. L. P. Babich and M. L. Kudryavtseva, “Group Equations for Moments of the Relativistic Electron Distribution Function in Cold Gas of Neutral Atomic Particles in the External Electric Field,” Zh. Eksp. Teor. Fiz. 131, 808 (2007).
5. L. P. Babich, I. M. Kutsyk, A. Yu. Kudryavtsev, and E. N. Donskoy, “New Data on Space and Time Scales of Relativistic Runaway Electron Avalanche for Thunderstorm Enviornment: Monte Carlo Calculations,” Phys. Lett. A 245, 460–470 (1998).