1. Andrejchouk V, Klimchouk A (1993) Environmental change and human impact on karst in Western Ukraine. In: Williams PW (ed) Karst Terrains, Environmental Change and Human Impact. Catena 25 (Supplement), pp 146–160
2. Benito G, Pérez del Campo P, Gutiérrez-Elorza M, Sancho C (1995) Natural and human-induced sinkholes in gypsum terrain and associated environmental problems in NE Spain. Environ Geol 25:156–164
3. Cooper AH (1988) Subsidence resulting from the dissolution of Permian gypsum in the Ripon area: its relevance to mining and water abstraction. In: Bell FG, Culshaw MG, Cripps JC, Lovell MA (eds) Engineering Geology of Underground Movements, vol 5. Geological Society of London, Eng Geol Spec Publ, London, pp 387–390
4. Cooper AH (1998) Subsidence hazards caused by the dissolution of Permian gypsum in England: geology, investigations and remediation. In: Maund JG, Eddleston M (eds) Geohazards in Engineering Geology, vol 15. Geological Society of London, Eng Geol Spec Publ, London, pp 265–275
5. Cooper AH (2002) Environmental problems caused by gypsum karst and salt karst in Great Britain. Carbonates Evaporites 17:116–120