@article{dutta2006asynchronous,
  title={{Asynchronous optimal mixed P2P satellite refueling strategies}},
  author={Dutta, A. and Tsiotras, P.},
  journal={Journal of the Astronautical Sciences},
  volume={54},
  number={3-4},
  pages={543--566},
  year={2006},
  publisher={Citeseer}
}