@InProceedings{collberg03system,
  author = 	 {Christian Collberg and Stephen Kobourov and  Jasvir Nagra and Jacob Pitts and Kevin Wampler},
  title = 	 {A System for Graph-Based Visualization of the Evolution of Software},
  booktitle = 	 {Proceedings of ACM2003 Symposium on Software Visualization},
  pages =	 {77--86},
  year =	 2003,
  editor =	 {Stephen Diehl and John Stasko and Stephen Spencer},
  month =	 {June},
  organization = {ACM},
  publisher =	 {ACM},
  cache = "collberg03system.pdf",
}