@patent{Black:USPTO:1995c,
  title = {Image segmentation using robust mixture models},
  howpublished = {US Pat. 5,802,203},
  month = jun,
  year = {1995},
  slug = {black-uspto-1995c},
  author = {Black, M. J. and Jepson, A. D.},
  month_numeric = {6}
}