T. Omori, и K. Maruyama. MSR '08: Proceedings of the 2008 international workshop on Mining software repositories, стр. 31--34. New York, NY, USA, ACM, (мая 2008)
J. Xu, Y. Gao, S. Christley, и G. Madey. HICSS '05: Proceedings of the Proceedings of the 38th Annual Hawaii International Conference on System Sciences (HICSS'05) - Track 7, стр. 198. Washington, DC, USA, IEEE Computer Society, (2005)