@inproceedings{ijcai2013p70,
  title     = {Multiwinner Elections Under Preferences That Are Single-Peaked on a Tree},
  author    = {Yu, Lan and Chan, Hau and Elkind, Edith},
  booktitle = {Proceedings of the Twenty-Third International Joint Conference on
               Artificial Intelligence, {IJCAI-13}},
  publisher = {AAAI Press / International Joint Conferences on Artificial Intelligence},
  editor    = {Francesca Rossi},
  pages     = {425--430},
  year      = {2013},
  month     = {8},
  url       = {https://ijcai.org/proceedings/2013/70},
}