@conference {9222,
	title = {Agreeing to disagree: graphics for comparing expert classifications},
	booktitle = {Proceedings of the 58th World Statistical Congress},
	year = {2011},
	publisher = {International Statistical Institute},
	organization = {International Statistical Institute},
	author = {Unwin, Antony and H{\"o}gg, Tanja and Pielh{\"o}fer, Alexander}
}
