@article{2009-voyagers-and-voyeurs-cacm,
  title = {Voyagers and Voyeurs: Supporting Asynchronous Collaborative Visualization},
  author = {Jeffrey Heer AND Fernanda Viégas AND Martin Wattenberg},
  journal = {Communications of the ACM},
  year = {2009},
  volume = {52},
  issue = {1},
  pages = {87--97},
  url = {http://vis.stanford.edu/papers/voyagers-and-voyeurs-cacm}
}