1. Boccara, A.C., Fournier, D. and Badoz, J. 1979. Topical Meeting on Photoacoustic Spectroscopy. Ames. Aug1979, Iowa. pp.1–3.
2. Thermo‐optical spectroscopy: Detection by the ’’mirage effect’’
3. Southall, J.P.C. 1964.“Mirrors, Prisms and Lenses,”, 575New York: Dover. ff