1. Flocas, A., 1983: The annual and seasonal distribution of fronts over central southern Europe and the Mediterranean.Climatol.,4, 255?267.
2. Harrison, M. S. J., 1983: The Southern Oscillation, zonal equatorial circulation cells and South African rainfall. Preprints, First International Conference on the meteorology of the Southern Hemisphere.
3. Harrison, M. S. J., 1984: A generalized classification of South African Summer rain-bearing synoptic systems.J. Climatology,4, 547?560.
4. Harrison, M. S. J., 1986: A Synoptic Climatology of South African Rainfall Variation. Unpublished Ph.D. Thesis, University of the Witwatersrand, 341 pp.
5. Hattle, J. B., 1979: Revised final report: Guti project. Met. Notes, Ser. A. No. 11, Zimbabwe Meteorological Services