@misc{indiciae60cf8b595064,
  title = {Defining the subjective experience of workload},
  author = {Hart, S. G. and Childress, M. E. and Bortolussi, M.},
  year = {1981},
  url = {https://ntrs.nasa.gov/citations/19830045112},
  note = {Source identifier: 19830045112}
}