1. Ast W, Hubal H, Schollmier P (2001) Bewehrter Erdkorper mit Endfall-Warnanlage fur den Eisenbahnknoten Grobers Sonderweroffentlichang der Eisenbahntechnischen Rundschau, Edition ETR. Ingenieurbauwerke S130–136
2. Bonaparte R, Berg RR (1987) The use of geosynthetics to support roadways over sinkhole prone areas. In: Beck BF, Wilson WL (eds) Karst hydrogeology; engineering and environmental applications. Proceedings of the 2nd multidisciplinary conference on sinkholes and the environmental impacts of karst. Orlando/Florida/9–11 February 1987. A A Balkema, Rotterdam, pp 427–445
3. British Standards Institution (1995) “Code of practice for strengthened/reinforced soils and other fills (BS 8006 1995)”. British Standards Institution, London p 186
4. Cooper AH (1986) Foundered strata and subsidence resulting from the dissolution of Permian gypsum n the Ripon and Bedale areas, North Yorkshire. In: Harwood GM, Smith DB (eds) The English Zechstein and related topics. Geological Society of London, Special Publication. No. 22, pp 127–139
5. Cooper AH (1995) Subsidence hazards due to the dissolution of Permian gypsum in England: investigation and remediation. In: Beck FB (ed) Karst Geohazards: engineering and environmental problems in karst terrane. Proceedings of the 5th multidisciplinary conference on sinkholes and the engineering and environmental impacts of karst Gatlinburg/Tennessee/2–5 April 1995, AA Balkema, Rotterdam. pp 23–29