@misc{indiciae3fd054ba4207,
  title = {Planning R and D projects using GERT},
  author = {Alan, A. and Enlow, R. A. and Pritsker, B.},
  year = {1969},
  url = {https://ntrs.nasa.gov/citations/19700005105},
  note = {Source identifier: 19700005105}
}