Publication Type

Article Type	Short Description
Addendum	Publication item giving additional information regarding another publication item, mostly presenting additional results.
Correspondence	Letter to the editor or a reply to the letter.
Discussion	Argumentative communication, like papers in a discussion, but also perspectives, commentaries, etc.
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).
Full Length Article	Complete report on original research.
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.
Short Communication	Short report or announcement of research, usually claiming certain results, usually with a shorter publication time than other papers in the same publication. Appear under many names, such as Letter Papers, Preliminary notes, Notes, etc.