1. A probability density function for daily insolation within the temperature storm belts;Olseth;Solar Energy,1984
2. A probability density function for daily insolation within the temperature storm belts;Olseth;Solar Energy,1986
3. Radiation Observations in Bergen, Norway;Schieldrup Paulsen,1965
4. Agricultural University of Norway, Department of Physics and Meteorology, Meteorological data from Aas (1968–79) (in Norwegian).
5. Study of shortwave radiation on non-horizontal surfaces;Hay;Canadian Climate Centre, Report No. 79-12,1979