@article{ETD,
      school = {M.S.},
      author = {Meininger, Mark M. and },
      url = {http://digitalcollections.ohsu.edu/record/79},
      title = {The experimental characterization of an electron optical  lens},
      publisher = {Oregon Graduate Center},
      number = {ETD},
      doi = {https://doi.org/10.6083/M4S46PV3},
      recid = {79},
      address = {1985},
}