1. Antoniol G, Ayari K, Di Penta M, Khomh F, Guéhéneuc Y-G (2008) Is it a bug or an enhancement? A text-based approach to classify change requests. In: Vigder M, Chechik M (eds) Proceedings of the 18th IBM centers for advanced studies conference (CASCON). ACM Press, New York, 15 pp
2. Aversano L, Canfora G, Cerulo L, Del Grosso C, Di Penta M (2007) An empirical study on the evolution of design patterns. In: Proc. of the the 6th European software engineering conf. and symp. on the foundations of software engineering. ACM Press, New York, pp 385–394
3. Basili VR, Briand LC, Melo WL (1996) A validation of object-oriented design metrics as quality indicators. IEEE Trans Softw Eng 22(10):751–761
4. Bieman JM, Straw G, Wang H, Munger PW, Alexander RT (2003) Design patterns and change proneness: an examination of five evolving systems. In: 9th international software metrics symposium (METRICS’03). IEEE Computer Society Press, Piscataway, pp 40–49
5. Bois BD, Demeyer S, Verelst J, Mens T, Temmerman M (2006) Does god class decomposition affect comprehensibility? In: Proceedings of the IASTED international conference on software engineering. IASTED/ACTA Press, Calgary, pp 346–355