@inproceedings{2010-weighted-social-graphs,
  title = {All Friends are not Equal: Using Weights in Social Graphs to Improve Search},
  author = {Sudheendra Hangal AND Diana MacLean AND Monica S. Lam AND Jeffrey Heer},
  booktitle = {Workshop on Social Network Mining \& Analysis, ACM KDD},
  year = {2010},
  url = {http://vis.stanford.edu/papers/weighted-social-graphs}
}