@misc{indiciaebe2b9695fd84,
  title = {An interactive technique to generate digital elevation data using a vidicon camera},
  author = {Sircar, J. K. and Ragan, R. M.},
  year = {1984},
  url = {https://ntrs.nasa.gov/citations/19860035965},
  note = {Source identifier: 19860035965}
}