@misc{indiciae2b48f7bf50e3,
  title = {Analysis of launch windows from circular orbits for representative Mars missions},
  author = {Deerwester, J. M. and Manning, L. A. and Swenson, B. L.},
  year = {1968},
  url = {https://ntrs.nasa.gov/citations/19680023899},
  note = {Source identifier: 19680023899}
}