1. R.A. Smith, F.E. Jones, R.P. Chasmar: The Detection and Measurement of Infrared Radiation. (Oxford at the Clarendon Press 1957)
2. A.O. Sall: Optica i Spectroscopia (Russian) 6, 219 (1959)
3. V.P. Zharov: Development and Research of Laser Optoacoustic Instruments for Analysis of Gas Media (Russian) Dissertation, MVTU Moscow (1977)
4. A.F. Krupnov, A.V. Burenin: Molecular Spectroscopy: Modern Research, Vol. 2 (Academic, New York, 1976) p. 93
5. L.J. Gershtein: Izv. VUZov, Radiofizika (Russian) 20, 223 (1977)