1. Allan, R.L., Dickinson, G., Dickson, J.H., Murphy, K.J., Pulford, I.D., Rogerson, R. & Watson, K. (1997). The Natural Heritage Interest of Bings (Waste Tips) in Scotland: Inventory and Review. Scottish Natural Heritage Review 48. SNH, Edinburgh.
2. Ash, H.J., Gemmell, R.P. & Bradshaw, A.D. (1994). The introduction of native plant species on industrial waste heaps: a test of immigration and other factors affecting primary succession. Journal of Applied Ecology 31, 74-84.
3. Batty, L.C. (2005). The potential importance of mine sites for biodiversity. Mine Water and the Environment 24, 101-103.
4. Bodsworth, E., Shepherd, P. & Plant, C. (2005). Exotic Plant Species on Brownfield Land: their Value to Invertebrates of Nature Conservation Importance. English Nature Research Reports No. 650.
5. Bradshaw, A.D. (1977). Conservation problems in the future. Proceedings of the Royal Society of London 197B, 77-96.