@article{litvinchev2006using,
  title={Using error bounds to compare aggregated generalized transportation models},
  author={Litvinchev, Igor S and Rangel, Socorro},
  journal={Annals of Operations Research},
  volume={146},
  number={1},
  pages={119--134},
  year={2006},
  publisher={Springer US},
  keywords = {pisis}
}

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