Facial Feature Representation (bibtex)
@INBOOK{KamHadPie:2011,
  chapter = {Handbook of Face Recognition},
  title = {Facial Feature Representation},
  publisher = {Springer},
  year = {2011},
  author = {J.-K. Kamarainen and A. Hadid and M. Pietik\"ainen},
  edition = {2nd},
  alteditor = {S.Z. Li and A.K. Jain},
  url = {http://www.springer.com/computer/image+processing/book/978-0-85729-931-4}
}