@article{Plotnikov:1829,
      author        = "Plotnikov, I. and Rouillard, A.P. and Davies, J. and
                       Bothmer, V. and Eastwood, J. P. and Gallagher, P.T. and
                       Harrison, R.A. and Kilpua, E. and Möstl, Christian and
                       Rodriguez, L.",
      title         = "{Long-Term Tracking of Corotating Density Structures using
                       Heliospheric Imaging}",
      year          = "2016",
}