de Marsily, G., Lavedan, G., Boucher, M. and Fasanino, G. (1984). "Interpretation
                           of interference tests in a well field using geostatistical techniques to fit the permeability
                           distribution in a reservoir model."  Geostatistics for Natural Resources Characterization,
                           Part, 2, D. Reidel Publishing Company. Boston, USA.
