@article\{Wu2009,
 author={Guohong Albert Wu and  Se-Ran Jun and  Gregory E. Sims and  Sung-Hou Kim},
 title={{Whole-proteome phylogeny of large dsDNA virus families by an alignment-freemethod}},
 journal={Proceedings of the National Academy of Sciences of the United States of America},
 volume={106},
 number={31},
 pages={12826--31},
 year={2009}
}