@article{VanCamp:1589,
      author        = "Van Camp, Michel and Meeus R, Philippe and Quinif, Yves
                       and Kaufmann, Olivier and Van Ruymbeke, Michel and
                       Vandiepenbeeck, Marc and Camelbeeck, Thierry",
      title         = "{Karst aquifer investigation using absolute gravity}",
      year          = "2006",
}