@misc{1163806,
  author = {Joseph E Clark and Paul Giesecke},
  title = {Outdoor performance of plastics::I. introduction and color-change},
  year = {1968},
  month = {1968-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.RPT.9912},
  language = {en},
}