@article\{Hadfield2018,
 author={James Hadfield and  Colin Megill and  Sidney M. Bell and  John Huddleston and  Barney Potter and  Charlton Callender and  Pavel Sagulenko and  Trevor Bedford and  Richard A. Neher},
 title={{Nextstrain: real-time tracking of pathogen evolution}},
 journal={Bioinformatics},
 volume={34},
 number={23},
 pages={4121--4123},
 year={2018}
}