Yutao Ma Keqing He Dehui Du Jing Liu Yulan Yan A Complexity Metrics Set for Large-Scale Object-Oriented Software Systems. 189 2006 conf/IEEEcit/2006 CIT http://doi.ieeecomputersociety.org/10.1109/CIT.2006.3 db/conf/IEEEcit/IEEEcit2006.html#MaHDLY06