@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},
  Xvolume = {?},
  Xnumber = {?},
  Xpages = {?},
  year={2023},
}