@misc{indiciae84012affdd08,
  title = {High Earth Orbit Design for Lunar-Assisted Medium Class Explorer Missions},
  author = {McGiffin, Daniel A. and Mathews, Michael and Cooley, Steven},
  year = {2001},
  url = {https://ntrs.nasa.gov/citations/20010084964},
  note = {Source identifier: 20010084964}
}