@inproceedings{ijcai2013p187,
  title     = {Exact Top-k Feature Selection via l2, 0-Norm Constraint},
  author    = {Cai, Xiao and Nie, Feiping and Huang, Heng},
  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     = {1240--1245},
  year      = {2013},
  month     = {8},
  url       = {https://ijcai.org/proceedings/2013/187},
}