@misc{indiciaed3764a8bcbe5,
  title = {Multi-level manual and autonomous control superposition for intelligent telerobot},
  author = {Hirai, Shigeoki and Sato, T.},
  year = {1989},
  url = {https://ntrs.nasa.gov/citations/19900020572},
  note = {Source identifier: 19900020572}
}