@misc{indiciae8a89a58f06e9,
  title = {Propulsion Technology Assessment: Science and Enabling Technologies to Explore the Interstellar Medium},
  author = {Hopkins, Randall C. and Thomas, Herbert D. and Wiegmann, Bruce M. and Heaton, Andrew F. and Johnson, Les and Baysinger, Michael F. and Beers, Benjamin R.},
  year = {2016},
  url = {https://ntrs.nasa.gov/citations/20160004404},
  note = {Source identifier: 20160004404}
}