@inproceedings{sharon16-eMM,
  title={An Improved Priority Function for Bidirectional Heuristic Search},
  author={Guni Sharon, Ariel Felner, Robert C. Holte, Nathan R. Sturtevant},
  booktitle={Ninth Annual Symposium on Combinatorial Search (SOCS-16)},
  year={2016},
  pages={139--140}
}