@article{mathprog-phragmen, 
  title={Phragm{\'e}n's Voting Methods and Justified Representation},
  doi={10.1007/s10107-023-01926-8},
  journal={Mathematical Programming},
  publisher={Springer},
  author={Markus Brill and Rupert Freeman and Svante Janson and Martin Lackner},
  volume = {203},
  pages = {47--76},
  year={2024},
}