@misc{indiciaeba8a9d7e019a,
  title = {Types of verbal interaction with instructable robots},
  author = {Crangle, C. and Suppes, P. and Michalowski, S.},
  year = {1987},
  url = {https://ntrs.nasa.gov/citations/19890017165},
  note = {Source identifier: 19890017165}
}