@misc{1183311,
  author = {George E Turner and Belinda L Collins},
  title = {Pedestrian movement on ramps - a preliminary investigation:},
  year = {1979},
  month = {1979-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.IR.79-1729},
  language = {en},
}