GIBBS, J. N. (1999).
Dieback of pedunculate oak.
Forestry Commission Information Note 22
Forestry Commission, Edinburgh.

INNES, J. L. (1990).
Assessment of tree condition.
Forestry Commission Field Book 12
HMSO, London.

INNES, J. L. & BOSWELL, R. C. (1991).
Monitoring of Forest Condition in Great Britain 1990.
Forestry Commission Bulletin 98
HMSO, London.

REDFERN, D. B., BOSWELL, R. C. and PROUDFOOT, J. C. (1996).
Forest Condition 1994.
Research Information Note 282.
Forestry Commission, Edinburgh.

REDFERN, D. B., BOSWELL, R. C. and PROUDFOOT,J. C. (1998).
Forest condition 1997.
Forestry Commission Information Note 4
Forestry Commission, Edinburgh.

REDFERN, D. B., BOSWELL, R. C. and PROUDFOOT, J. C. (1999).
Forest condition 1998.
Forestry Commission Information Note 19
Forestry Commission, Edinburgh.

REDFERN, D. B., BOSWELL, R. C. and PROUDFOOT, J. C. (2000).
Forest condition 1999.
Forestry Commission Information Note 33
Forestry Commission, Edinburgh.

HENDRY, S. J., BOSWELL, R. C. and PROUDFOOT, J. C. (2001).
Forest condition 2000. 
Forestry Commission Information Note 41
Forestry Commission, Edinburgh.

HENDRY, S.J., BOSWELL, R.C. and PROUDFOOT, J.C. (2002).
Forest condition 2001. 
Forestry Commission Information Note 46
Forestry Commission, Edinburgh.

HENDRY, S. J., BOSWELL, R. C. and PROUDFOOT, J.C. (2003).
Forest condition 2002. 
Forestry Commission Information Note 51
Forestry Commission, Edinburgh.

HENDRY, S.J., POOLE, E.J., CRAIG, I.C. and PROUDFOOT, J.C. (2004).
Forest condition 2003. 
Forestry Commission Information Note 62
Forestry Commission, Edinburgh.

HENDRY, S. J., POOLE, E. J., CRAIG, I.C. and PROUDFOOT, J. C. (2005).
Forest condition 2004. 
Forestry Commission Information Note 75
Forestry Commission, Edinburgh.

RAY, D., PYATT, G. and BROADMEADOW, M. (2002).
Modelling the future climatic suitability of plantation forest tree species. In: Climate Change: impacts on UK forests, ed. M. Broadmeadow. 
Forestry Commission Bulletin 125.
Forestry Commission, Edinburgh.