@ARTICLE{lang2011,
   author = {{Lang}, D. and {Hogg}, D.~W.},
    title = "{ Searching for comets on the World Wide Web: The orbit of 17P/Holmes from the behavior of photographers}",
  journal = {\AJ},
  year = 2011,
  volume = {144},
  pages = {46},
   note = {arXiv:1103.6038}
}