.
| 
 Article type  | 
 Short description  | 
|---|---|
| Addendum | Publication item giving additional information regarding another publication item, mostly presenting additional results.  | 
| Duplicate | Accidental duplication of an article in another journal. The text of the article is retracted. The HTML pages are replaced by a single page with citation details and an explanation. The PDF pages remain with a watermark on every page to notify it is a duplicate.  | 
| Erratum | Article in which errors are reported that were made in an earlier publication in the same journal. It can be Erratum (publishing error) but also Corrigendum (author error).  | 
| Removal | The text of the article is removed. The HTML pages and PDF pages of the article are completely removed and replaced by a single page with citation details and an explanation.  | 
| Retraction | The text of the article is retracted. The HTML pages are replaced by a single page with citation details and an explanation. The PDF pages remain with a watermark on every page to notify it is retracted.  | 
| Review article | Substantial overview of original research, usually with a comprehensive bibliography, generally also contains a table of contents.  | 
Related links
Authorship and Authors' Responsibilities
