Akito Monden Daikai Nakae Toshihiro Kamiya Shin-ichi Sato Ken-ichi Matsumoto Software Quality Analysis by Code Clones in Industrial Legacy Software. 87- 2002 conf/metrics/2002 IEEE METRICS http://csdl.computer.org/comp/proceedings/metrics/2002/1339/00/13390087abs.htm db/conf/metrics/metrics2002.html#MondenNKSM02