1. Berre, A., Ducloux, J. & Dupuis, J., 1974. Pedogénèse sur roches ultrabasiques en climat tempéré humide les sols sur serpentinites du Limousin occidental. Science Sol. 3: 135?146.
2. Birse, E. L., 1971. Assessment of climatic conditions in Scotland. 3. The bioclimatic sub-regions. Macaulay Institute for Soil Research, Aberdeen.
3. Birse, E. L., 1976. The Bioclimate of Scotland in relation to a World System of Classification and to Land Use Capability. Trans. Bot. Soc. Edinburgh 42: 463?467.
4. Birse, E. L., 1980a. Suggested amendments to the World Soil Classification to accommodate Scottish mountain and aeolian soils. J. Soil Sci. 31: 117?124.
5. Birse, E. L., 1980b. Plant Communities of Scotland. Revised and additional tables. Macaulay Institute for Soil Research, Aberdeen.