Simone Livieri Yoshiki Higo Makoto Matsushita Katsuro Inoue Analysis of the Linux Kernel Evolution Using Code Clone Coverage. 22 2007 conf/msr/2007 MSR http://doi.ieeecomputersociety.org/10.1109/MSR.2007.1 db/conf/msr/msr2007.html#LivieriHMI07