@Article{hallj:03,
  author = 	 {Piotr Indyk and Suresh Venkatasubramanian},
  title = 	 {Approximate congruence in nearly linear time},
  journal = 	 {Computational Geometry: Theory and Applications},
  year = 	 2003,
  volume =	 24,
  number =       2,
  pages =	 {115--128}
}