When an author tries to present the work of someone else as his or her own, it is called plagiarism. In addition, when an author uses a considerable portion of his or her own previously published work in a new one without properly citing the reference, it is called a duplicate publication; sometimes also referred to as self-plagiarism. This may range from publishing the same article in another journal to 'salami-slicing', which is data segmentation, to adding little new data to the previous article.
The New Journal of Urology journal uses the Crossref Similarity Check program for scanning plagiarism. The articles to be published are required to have less than 20% similarity. If suspected plagiarism is found in an article either before (by reviewers or editorial team) or after (by readers) publication, the journal will act according to COPE’s code of conduct and flowcharts.