1. Survey of research on software clones;Koschke,2007
2. A survey on software clone detection research;Roy;Queen’s School Comput. TR,2007
3. An empirical study of code clone genealogies;Kim,2005
4. A study of consistent and inconsistent changes to code clones;Krinke,2007
5. How clones are maintained: An empirical study;Aversano,2007