1. Thermohydrodynamic Light Guides;Berkovsky,1969
2. A lens using unlike counter-flowing gases;Berriman;Bell. Syst. Tech. J,1964
3. Introduction to the Theory of Convective Gas Lenses;Martynenko,1972
4. Principles of Optics;Born,1964
5. Theory of Dielectrics—Dielectric Constant and Dielectric Loss;Fröhlich,1949