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3. Pulsed Light Sources, Ed. by I. S. Marshak (Énergiya, Moscow, 1978) [in Russian].
4. Encyclopedia of Low-Temperature Plasma, Vol. 4: Gas and Plasma Lasers, Ed. by V. E. Fortov (Nauka, Moscow, 2000) [in Russian].
5. P. K. Bharadwaj, R. F. Code, H. M. van Driel, and E. Walentynowicz, Appl. Phys. Lett. 43, 207 (1983).