@article{ayed2015distribution,
  title={Distribution matching with the bhattacharyya similarity: a bound optimization framework},
  author={Ayed, Ismail Ben and Punithakumar, Kumaradevan and Li, Shuo},
  journal={IEEE transactions on pattern analysis and machine intelligence},
  volume={37},
  number={9},
  pages={1777--1791},
  year={2015},
  publisher={IEEE}
}