@article{CTT100885916,
  author = {Ken Kobayashi and Yuichi Takano and Kazuhide Nakata},
  title = {Cardinality-constrained distributionally robust portfolio optimization},
  journal = {European Journal of Operational Research},
  year = 2023,
}

@inproceedings{CTT100882618,
  author = {Ken Kobayashi and Yuichi Takano and Kazuhide Nakata},
  title = {Cardinality-constrained Distributionally Robust Portfolio Optimization},
  booktitle = {},
  year = 2022,
}