@article{ETD,
      school = {Ph.D.},
      author = {Porter, Harry H., III and },
      url = {http://digitalcollections.ohsu.edu/record/278},
      title = {A logic-based grammar formalism incorporating  feature-structures and inheritance},
      publisher = {Oregon Graduate Center},
      number = {ETD},
      doi = {https://doi.org/10.6083/M42J68SV},
      recid = {278},
      address = {1988},
}