D. German, D. Cubranić, и M. Storey. MSR '05: Proceedings of the 2005 international workshop on Mining software repositories, стр. 1--5. New York, NY, USA, ACM, (2005)
M. Keith, H. Demirkan, и M. Goul. HICSS '07: Proceedings of the 40st Annual Hawaii International Conference on System Sciences, 0, стр. 215b. Los Alamitos, CA, USA, IEEE Computer Society, (2007)