@article{Agrawala:2011:DPV,
  title = {Design Principles for Visual Communication},
  journal = {Communications of the ACM},
  author = {Maneesh Agrawala and Wilmot Li and Floraine Berthouzoz},
  month = apr,
  year = 2011,
  pages = {60-69},
  url = {http://graphics.berkeley.edu/papers/Agrawala-DPV-2011-04/},
}