@TechReport{seshia+:perfcomp,
  author = 	 {S. A. Seshi and G. E. Blelloch and R. W. Harper},
  title = 	 {A Performance Comparison of Interval Arithmetic and Error Analysis in Geometric Predicates},
  institution =  {Carnegie Mellon University School of Computer Science},
  year = 	 2000,
  number =	 {CMU--CS--00--172},
  address =	 {Pittsburgh, PA},
  month =	 {December}
}