1. Allen, S. E. (1989) Analysis of vegetation and other organic materials. In Chemical Analysis of Ecological Materials, ed. S. E. Allen, 2nd edn, pp. 46–61. Blackwell Scientific Publishers, Oxford.
2. Binns, W. O., Mayhead, G. J. and MacKenzie, J. M. (1980) Nutrient Deficiencies of Conifers in British Forests, an Illustrated Guide. Forestry Commission Leaflet 97. HMSO, London.
3. Seasonal changes in the frost hardiness of provenances of Picea sitchensis in Scotland;Cannell;Forestry,1982
4. Clonal differences in dry matter distribution, wood specific gravity, foliage efficiency in Picea sitchensis and Pinus contorta;Cannell;Silvae Genetica,1983
5. Frost avoidance by selection for late budburst in Picea sitchensis;Cannell;Journal of Applied Ecology,1985