@inproceedings { sacan7distmat,
  AUTHOR = { Ahmet Sacan and I. Hakki Toroslu },
  TITLE = { Amino acid substitution matrices based on 4-body Delaunay contact profiles },
  BOOKTITLE = { Proceedings of the IEEE 7th International Symposium on Bioinformatics \& Bioengineering (BIBE) },
  YEAR = { 2007 },
  PAGES = { 796--801 },
  ADDRESS = { Boston, USA }
}