@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://idl.cs.washington.edu/papers/perception-treemaps},
}