Jacobsen, C. S., J. R. de Lipthay, M. Bender, L. Fredslund, A. R. Johnsen, and K. Johnsen. “Direct Analysis of Microbial Populations in Soil and Freshwater Aquifers Using Nucleic Acid Based Techniques”. GEUS Bulletin, vol. 4, July 2004, pp. 33-36, doi:10.34194/geusb.v4.4777.