@misc{indiciae370416254e17,
  title = {Development of Augmented Spark Impinging Igniter System for Methane Engines},
  author = {Marshall, William M. and Osborne, Robin J. and Greene, Sandra E.},
  year = {2017},
  url = {https://ntrs.nasa.gov/citations/20170009151},
  note = {Source identifier: 20170009151}
}