@misc{indiciae67d3e2473404,
  title = {User Manual for GERT EXCLUSIVE-OR Program},
  author = {Ishmael, Phillip C. and Pritsker, A. Alan B.},
  year = {1968},
  url = {https://ntrs.nasa.gov/citations/19680073214},
  note = {Source identifier: 19680073214}
}