@CONFERENCE{TAinfotech05,
  author = {Tsiotras, P. and de Neilly, A.},
  title = {Comparison Between Peer-to-Peer and Single-Spacecraft Refueling Strategies for Spacecraft in Circular Orbits},
  booktitle = {Infotech at Aerospace},
  year = {2005},
  month = {Sept.~26--29},
  note = {{Crystal City, DC}}
}