@CONFERENCE{DT:space08,
  author = {Dutta, A. and Tsiotras, P.},
  title = {A Cooperative {P2P} Refueling Strategy for Circular Satellite Constellations},
  booktitle = {AIAA Space Conference and Exhibit},
  year = {Sept.~9-11, 2008},
  address = {San Diego, CA},
  note = {AIAA Paper 2008-7643},
}