@inproceedings{Hennessey2008,
  title = {A Simplification Algorithm for Visualizing the Structure of Complex Graphs},
  booktitle = {12th International Conference Information Visualization.},
  year = {2008},
  pages = {616{\textendash}625},
  author = {Hennessey, Dan and Brooks, Dan and Fridman, Lex and Breen, David}
}