@misc{indiciae5ad1820c92a2,
  title = {Implementation Options for the PROPEL Electrodynamic Tether Demonstration Mission},
  author = {Bilen, Sven G. and Johnson, C. Les and Gilchrist, Brian E. and Hoyt, Robert P. and Elder, Craig H. and Fuhrhop, Keith P. and Scadera, Michael and Stone, Nobie},
  year = {2014},
  url = {https://ntrs.nasa.gov/citations/20140011688},
  note = {Source identifier: 20140011688}
}