3) Brown, A. H. F. and Warr, S. J. (1992) The effect of changing management on seed bank in ancient coppices. In Ecology and management of coppice woodland (eds. Buckley, G. P.), Chapman & Hall, London, pp.147-166.
4) Gross, K. L. (1990) A comparison of methods for estimating seed number in soil. Journal of Ecology, 78:1079-1093.