@article{Florax:177827,
      author = {Florax, Raymond J.G.M. and Voortman, Roelf L. and Brouwer,  Joost},
      title = {{Spatial dimensions of precision agriculture: a spatial  econometric analysis of millet yield on Sahelian  coversands}},
      journal = {Agricultural Economics: The Journal of the International  Association of Agricultural Economists},
      volume = {Volume 27},
      number = {Issue 3},
      pages = {425. - 20},
      year = {2002},
}