@misc{indiciaee9eabd2a2184,
  title = {Spacecraft-spacecraft very long baseline interferometry for planetary approach navigation},
  author = {Edwards, Charles D., Jr. and Folkner, William M. and Border, James S. and Wood, Lincoln J.},
  year = {1991},
  url = {https://ntrs.nasa.gov/citations/19930033967},
  note = {Source identifier: 19930033967}
}