1. Solar radiation at the Earth's surface;Landsberg;Solar Energy,1961
2. Geographic distribution of solar radiation (USSR);Gal'tsov;Akad. nauk SSSR Izv. Seriya geograficheskaya,1962
3. On the evaluation of total radiation by climatological methods;Weng;Acta met. sin.,1964
4. World Maps of Climatology;Landsberg,1965
5. The reflection, absorption and transmission of solar radiation by fog and cloud;Hewson;Q. J. R. Meteorol. Soc.,1943