@article{Zou2011a,
  author = "S. Zou and M. B. Moldwin and A. Coster and L. R. Lyons and M. J. Nicolls",
  title = "GPS TEC observations of dynamics of the mid-latitude trough during substorms",
  year =  2011 ,
  journal = "Geophys. Res. Lett.",
  volume = 38,
  keywords = "amisr, pfisr",
  doi = "10.1029/2011GL048178"
}