@misc{indiciae217ebbb6f7d1,
  title = {Propulsion Technology Assessment: Science and Enabling Technologies to Explore the Interstellar Medium},
  author = {Hopkins, Randy and Thomas, Dan and Wiegmann, Bruce and Heaton, Andy and Johnson, Les and Baysinger, Mike and Beers, Ben},
  year = {2015},
  url = {https://ntrs.nasa.gov/citations/20150021414},
  note = {Source identifier: 20150021414}
}