@phdthesis{Weidig2007,
  author      = {Ilka Weidig},
  title       = {Fossil birds from the lower eocene Green River formation (USA)},
  type        = {doctoralthesis},
  pages       = {170},
  school      = {Universit{\"a}tsbibliothek Johann Christian Senckenberg},
  year        = {2007},
}