1. and 1962 ‘Spectral distribution of direct solar and diffuse radiation,’ Res. Rept., Tartu Astrophysical Laboratory, Estonia.
2. A contribution to the radiation climatology of Northern Europe
3. and 1954 ‘Estimation of the reflection and absorption of solar radiation by a cloudless atmosphere from recordings at the ground with results for Kew Observatory,’ M.R.P. 894, London.
4. 1972 Ph.D. Thesis, University of Nottingham, Geography Dept.