@article{Faust08,
  title = {Enhanced Color-to-Gray Conversion},
  author = {Martin Faust},
  year = {2008},
  url = {http://akpeters.metapress.com/content/h064467806415w46/},
  researchr = {https://researchr.org/publication/Faust08},
  cites = {0},
  citedby = {0},
  journal = {J. Graphics Tools},
  volume = {13},
  number = {2},
  pages = {13-19},
}