Human facial illustrations: Creation and psychophysical evaluation
Bruce Gooch, Erik Reinhard, Amy Gooch
ACM Transactions on Graphics

  @article{Gooch:2004:HFI,
    title = "Human facial illustrations: Creation and psychophysical evaluation",
    author = "Bruce Gooch and Erik Reinhard and Amy Gooch",
    journal = "ACM Transactions on Graphics",
    volume = 23,
    number = 1,
    month = jan, 
    year = 2004,
    pages = "27--44",
  }