@article{Freund:233621,
      recid = {233621},
      author = {Freund, R.J. and Wilson, R.R.},
      title = {An Example of a Gravity Model to Estiamte Recreational  Travel and Fishing Participation},
      address = {1973-06},
      number = {1507-2016-130846},
      series = {File Manuscript},
      pages = {32},
      year = {1973},
      url = {http://ageconsearch.umn.edu/record/233621},
      doi = {https://doi.org/10.22004/ag.econ.233621},
}