@article{litvinchev2000improved,
  title={On improved Choi--Goldfarb solution-containing ellipsoids in linear programming},
  author={Litvinchev, Igor S},
  journal={Operations Research Letters},
  volume={27},
  number={1},
  pages={29--37},
  year={2000},
  publisher={North-Holland},
  keywords = {pisis}
}

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