J. Abowd, L. Vilhuber, and W. Block. Privacy in Statistical Databases, volume 7556 of Lecture Notes in Computer Science, Springer Berlin Heidelberg, (2012)
P. Abrahamsson, and J. Koskela. Empirical Software Engineering, 2004. ISESE '04. Proceedings. 2004 International Symposium on, page 73--82. (August 2004)