@misc{indiciae6a246a804452,
  title = {Development of techniques for measuring pilot workload},
  author = {Spyker, D. A. and Stackhouse, S. P. and Khalafalla, A. S. and Mclane, R. C.},
  year = {1971},
  url = {https://ntrs.nasa.gov/citations/19720004411},
  note = {Source identifier: 19720004411}
}