@inproceedings {4066,
	title = {Time-Biased Gain},
	booktitle = {Conference on Evaluation of Information Access Technologies (NTCIR)},
	year = {2013},
	url = {http://research.nii.ac.jp/ntcir/workshop/OnlineProceedings10/pdf/NTCIR/02-NTCIR10-Keynote2-Clarke.pdf},
	author = {Charles Clarke}
}
