@misc{indiciaec68b926c0882,
  title = {In-Space Transportation with Tethers},
  author = {Lorenzini, Enrico and Estes, Robert D. and Cosmo, Mario L.},
  year = {1998},
  url = {https://ntrs.nasa.gov/citations/19980221813},
  note = {Source identifier: 19980221813}
}