1. The interrelationship and characteristic distribution of direct, diffuse and total radiation;Liu;Solar Energy,1960
2. The total 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
3. Simple procedure for predicting long term average energy delivery of non-concentrating and of concentrating solar collectors;Collares-Pereira,1978
4. Analysis of solar radiation measurements at Athens Observatory and estimates of solar radiation in Greece;Katsoulis;Solar Energy,1978
5. The status of solar radiation data bank for Greece;Lalas;Report of the Dept. of Meteorology of the University of Athens to the Ministry of Coordination, Athens, Greece,1979