@misc{indiciaebaa3fbce692c,
  title = {Ah!Help: A generalized on-line help facility},
  author = {Yu, Wong Nai and Mantooth, Charmiane and Soulahakil, Alex},
  year = {1986},
  url = {https://ntrs.nasa.gov/citations/19890006998},
  note = {Source identifier: 19890006998}
}