@article{2010-perception-treemaps,
  title = {Perceptual Guidelines for Creating Rectangular Treemaps},
  author = {Nicholas Kong AND Jeffrey Heer AND Maneesh Agrawala},
  journal = {IEEE Trans. Visualization \& Comp. Graphics (Proc. InfoVis)},
  year = {2010},
  url = {http://vis.stanford.edu/papers/perception-treemaps}
}