@article{Voon:175352,
      author = {Voon, J.P.},
      title = {{Measuring research benefits in an imperfect market:  second reply}},
      journal = {Agricultural Economics: The Journal of the International  Association of Agricultural Economists},
      volume = {Volume 22},
      number = {Issue 2},
      pages = {127. - 2},
      year = {2000},
}