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3. S. N. Vlasov, G.M. Zhislin, I.M. Orlova, M. I. Petelin, and G. G. Rogacheva, “IR-Regular Waveguides as Open Resonators,” Radiophys. Quantum Electron. 12(8), 972 (1969).
4. V.P. Bykov and O. O. Silichev, Laser Resonators (Moscow, Fizmatlit, 2003), p. 319 [in Russian].
5. P.W. Smith, “Stabilized, Single-Frequency Output from a Long Laser Cavity,” IEEE J. Quantum Electron. 1(8), 343 (1965).