1. McAdams, W. H.: Heat transmission. 3rd ed., New York: McGraw-Hill 1954
2. Eckert, E. R. G.; Soehngen, E.: Studies on heat transfer in laminar free convection with Zehnder-Mach interferometer. USAF Tech. Report 5747, Dec. 1948
3. Jones, C. O.; Masson, D. J.: An interferometric study of free convection heat transfer from enclosed isothermal surfaces. Trans. ASME (1953) 1275-1281
4. Hermann, R.: Heat transfer by free convection from horizontal cylinders in Diatomic gases. NACA TM 1366 (1954)
5. Mark, H. J.; Prins, J. A.: Thermal convection in laminar boundary layers. I, II, III. Appl. Sci. Res. 4A (1953–54) 11–24,195–206,207–224