@misc{indiciae6603014c920e,
  title = {Tracking performance under time sharing conditions with a digit processing task: A feedback control theory analysis},
  author = {Gopher, D. and Wickens, C. D.},
  year = {1975},
  url = {https://ntrs.nasa.gov/citations/19750025605},
  note = {Source identifier: 19750025605}
}