@article{art:ALM92,
author = "Luis Alvarez and   and  ",
journal = "Siam J. Numer. Anal.",
keywords = "ami",
month = "June",
number = "3",
pages = "845--866",
title = "{I}mage {S}elective {S}moothing and {E}dge {D}etection by 
      {N}onlinear {D}iffusion {II}",
volume = "29",
year = "1992",
}