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De Wit, M. (author), Zaidman, A. (author), Van Deursen, A. (author)Paper accepted for publication in the proceedings of the 25th International Conference on Software Maintenance (ICSM 2009). Code cloning is widely recognized as a threat to the maintainability of source code. As such, many clone detection and removal strategies have been proposed. However, some clones can often not be removed easily so other...report 2009