@misc{indiciae7046e99e0611,
  title = {Visual fatigue - The need for an integrated model},
  author = {Malmstrom, F. V. and Randle, R. J. and Murphy, M. R. and Reed, L. E. and Weber, R. J.},
  year = {1981},
  url = {https://ntrs.nasa.gov/citations/19810057729},
  note = {Source identifier: 19810057729}
}