1. Batsche H (written communication 1994) Hydrogeologisches Forschungsprogramm Asse. Institut für Tieflagerung, Braunschweig, Germany, unpublished report, various paginations
2. Batsche H, Klarr K, von Stempel C (1979) German geological exploration and hydrology of Asse II. Proceedings US/FRG Bilateral Workshop 1979. Waste isolation performance assessment and in situ testing. Hahn-Meitner Institut für Kernforschung, Berlin, Germany, pp 133–155
3. Bossy H (2006) The closure of the Asse research mine. http://www.bmu.de/files/pdfs/allgemein/application/pdf/jc_asse.pdf . Accessed 11 July 2007
4. Brooks RH, Corey AT (1964) Hydraulic properties of porous media. Hydrology Papers Colorado State University Fort Collins, USA, 3:1–27
5. Corey AT (1954) The interrelation between gas and oil relative permeabilities. Producer’s Monthly, vol. 19, no. 1, November 1954 (quoted by Brooks and Corey 1964)