@conference {15849,
	title = {Assessor error in stratified evaluation},
	booktitle = {Proceedings of the 19th ACM international conference on Information and knowledge management},
	year = {2010},
	month = {2010///},
	pages = {539 - 548},
	author = {Webber,W. and Oard, Douglas and Scholer,F. and Hedin,B.}
}
