@Article{data-expo-09, author = {Hadley Wickham}, doi = {10.1198/jcgs.2011.1de}, journal = {Journal of Computational and Graphical Statistics}, number = {2}, pages = {281–283}, title = {ASA 2009 Data Expo}, volume = {20}, year = {2011}, bdsk-url-1 = {http://dx.doi.org/10.1198/jcgs.2011.1de}, }