@article{ETD,
      school = {Ph.D.},
      author = {Bowers, Shawn and },
      url = {http://digitalcollections.ohsu.edu/record/11},
      title = {The uni-level description: a uniform framework for  managing structural heterogeneity},
      publisher = {Oregon Health and Science University},
      number = {ETD},
      doi = {https://doi.org/10.6083/M4JW8BS7},
      recid = {11},
      address = {2004},
}