1. Soils of the British Isles;Avery,1990
2. The use of livestock in calcareous grassland management, Nature Conservancy Council;Bacon,1990
3. The role of seed bank in restoration management of semi-natural grassland;Bakker,1991
4. Sussex Chalk Grassland Habitat Action Plan;Beldon,2000
5. Restoration management of abandoned chalk grassland in the Netherlands;Bobbink;Biodiversity and Conservation,1993