@misc{1157816,
  author = {A George Lieberman},
  title = {An electromagnetic formulation for treating optical reflections from graded-material surfaces:},
  year = {1982},
  month = {1982-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.TN.1171},
  language = {en},
}