@article{Piggott:118592,
      author = {Piggott, Nicholas E. and Wohlgenant, Michael K.},
      title = {{Price elasticities, joint products, and international  trade}},
      journal = {Australian Journal of Agricultural and Resource Economics},
      volume = {Volume 46},
      number = {Issue 4},
      pages = {487. - 14},
      year = {2002},
}