@article{ETD,
      school = {Certificate in Orthodontics},
      author = {Nordberg, Rodney C.},
      url = {http://digitalcollections.ohsu.edu/record/1292},
      title = {The force decay behavior of polyurethane ligature modules},
      number = {ETD},
      doi = {https://doi.org/10.6083/M4C53J0Q},
      recid = {1292},
      address = {1987},
}