1. D. Meek and D. Craggs, Electrical Breakdown of Gases (Oxford, 1953).
2. H. Raether, Electron Avalanches and Breakdown in Gases (London, 1964).
3. É. D. Lozannskii and O. B. Firsov, Theory of Spark (Atomizdat, Moscw, 1975) [in Russian].
4. Yu. P. Raizer, Physics of Gas Discharge (Nauka, Moscow, 1987), Ch. 17 [in Russian].
5. Encyclopedia of Low-Temperature Plasma, Ed. by V. E. Fortov (Nauka, Moscow, 2000), Introductory Vol. II, Sect. IV.7 [in Russian].