@misc{1178966,
  author = {Belinda L Collins and Neil D Lerner},
  title = {An evaluation of exit symbol visibility:},
  year = {1983},
  month = {1983-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.IR.83-2675},
  language = {en},
}