@article{IR,
      author = {Novick, David G.},
      url = {http://digitalcollections.ohsu.edu/record/3981},
      title = {Contribution graphs in multiparty discourse},
      abstract = {cse-93-015},
      number = {IR},
      doi = {https://doi.org/10.6083/2b88qc512},
      recid = {3981},
      address = {1993},
}