@article{Sporleder:201587,
      recid = {201587},
      author = {Sporleder, Thomas L.},
      title = {Algorithms for Vertical Integration Indices},
      address = {1975-10},
      number = {1803-2016-142583},
      series = {FSWP},
      pages = {21},
      year = {1975},
      url = {http://ageconsearch.umn.edu/record/201587},
      doi = {https://doi.org/10.22004/ag.econ.201587},
}