1. Solar engineering of thermal processes;Duffie,1980
2. Contribution à l'étude de l'atmosphère au sahel;Frangi;Veille Climat. Satellit. C.M.S. Lannion,1986
3. Dynamique de la couche de surface sahélienne;Frangi,1988
4. Results from ground based monitoring of vertical and horizontal spectral extinction. Some specific characteristics of dusty Sahelian atmospheres;Ben Mohamed;J. of Clim. and Appl. Meteor.,1986
5. The estimation of monthly mean values of daily total shortwave radiation on vertical and inclined surfaces from sunshine records for latitudes 40°N–40°S;Page,1964