1. Handbook of Mathematical Functions, Appl. Math. Ser. 55 M. Abramowitz I. A. Stegun National Bureau of Standards Washington, D. C. 1964
2. Anderson , E. R. Energy budget studies, Water Loss Investigations: Lake Hefner Studies, Technical Report 71 119 1954
3. Notes on radiation in the atmosphere, 1;Brunt;Quart. J. Roy. Meteorol. Soc.,1932
4. The derivation of Swinbank's long-wave radiation formula;Deacon;Quart. J. Roy. Meteorol. Soc.,1970
5. Mesures de rayonnement effectif à Leopoldville;DeCoster;Acad. Roy. Sci. Colon. Brussels Bull. Seances,1957