Literature
  • Reany 1978
  • A preliminary scanning electron microscope study of the minute morphological features of feathers and their taxonomic significance. Scanning Electron Microscopy 11: 471-477.
  • Robertson 1984
  • The Identification of Bird Feathers. Scheme for Feather Examination. Journal of the Forensic Science Society 24: 85-98.
  • Roselaar 1995
  • Taxonomy, morphology, and distribution of the Songbirds of Turkey: an atlas of biodiversity of Turkish passerine birds. Zoological Museum, University of Amsterdam. GMB, Haarlem, 240 pp.