Jeffery, S. R., Franklin, M. J. & Halevy, A. Y.
(2008).
Pay-as-you-go user feedback for dataspace systems.
Proceedings of the 2008 ACM SIGMOD international conference on Management of data (p./pp. 847--860),
New York, NY, USA: ACM.
ISBN: 978-1-60558-102-6