@article{Ryan:1217,
      author        = "Ryan, D. F. and Christe, S. and Mumford, S.  and
                       Perez-Suarez, D. and Ireland, Jack and Shih, A. Y. and
                       Inglis, Andrew and Liedtke, S.",
      title         = "{SunPy: Solar Physics in Python}",
      year          = "2015",
}