@article\{Hayward2015,
 author={Alexander Hayward and  Charlie K. Cornwallis and  Patric Jern},
 title={{Pan-vertebrate comparative genomics unmasks retrovirus macroevolution}},
 journal={Proceedings of the National Academy of Sciences of the United States of America},
 volume={112},
 number={2},
 pages={464--469},
 year={2015}
}