Comment on 2006 Article Plagiarized Three Times in Predatory Journals by Dietrich Rordorf

Alas, plagiarism is a plague that does not only concern predatory OA publishers (although the three cases you demonstrate are extreme). We just had a retraction of a paper that plagiarized the Introduction section of a 2009 Elsevier paper. During our investigation we found that the Introduction part in the Elsevier paper itself was plagiarized from an even earlier 2006 paper. The retraction is at http://www.mdpi.com/1420-3049/18/9/11001