@misc{indiciaec05721b966ed,
  title = {A natural-language interface to a mobile robot},
  author = {Michalowski, S. and Crangle, C. and Liang, L.},
  year = {1987},
  url = {https://ntrs.nasa.gov/citations/19890017164},
  note = {Source identifier: 19890017164}
}