@Journal{DBLP:journals/cagd/KeyserKM99,
   title = {Efficient and accurate B-rep generation of low degree sculptured solids using exact arithmetic: I - representations},
   author = {John Keyser and Shankar Krishnan and Dinesh Manocha},
   year = 1999,
   Journal = {Computer Aided Geometric Design},
   Volume = 16,
   Number = 9,
   Pages = {841-859},
   att_url = {http://www2.research.att.com/areas/visualization/papers_videos/pdf/DBLP-journals-cagd-KeyserKM99.pdf}
}