@misc{indiciaef4af0468f0d4,
  title = {Studies of multivariable manual control systems - A model for task interference},
  author = {Elkind, J. I. and Levison, W. H. and Ward, J. L.},
  year = {1971},
  url = {https://ntrs.nasa.gov/citations/19710016684},
  note = {Source identifier: 19710016684}
}