@misc{indiciae8c7142c20c18,
  title = {Nulling Interferometry: Working on the Dark Fringe},
  author = {Serabyn, E. and Wallace, J. and Nguyen, H. and Schmidtlin, E. and Hardy, G.},
  year = {1999},
  url = {https://ntrs.nasa.gov/citations/20060040835},
  note = {Source identifier: 20060040835}
}