@article{BleidornHillErseusetal.2009,
  author    = {Christoph Bleidorn and Natascha Hill and Christer Ers{\´e}us and Ralph Tiedemann},
  title     = {On the role of character loss in orbiniid phylogeny (Annelida) : molecules vs. morphology},
  doi       = {10.1016/j.ympev.2009.03.022},
  url       = {http://www.sciencedirect.com/science/journal/10557903},
  year      = {2009},
}