@article{Cleveland1984,
author = {Cleveland, W.S. and McGill, R.},
title= {Graphical perception theory, experimentation, and application to the development of graphical methods},
year = {1984},
doi = {10.2307/2288400},
journal = {Journal of the American Statistical Association},
volume = {79},
number = {387},
pages = {531--554},
}