@misc{indiciae7fd4f00bbfda,
  title = {Building a better leapfrog},
  author = {Hut, Piet and Makino, Jun and Mcmillan, Steve},
  year = {1995},
  url = {https://ntrs.nasa.gov/citations/19950050037},
  note = {Source identifier: 19950050037}
}