An article in a journal, magazine, newspaper. Not necessarily peer-reviewed. May be an electronic-only medium, such as an online journal[...]

This tag is used for Books, excluding published Conference Proceedings

This is to be used for conference proceedings, whether they are published books, chapters or individual papers and posters

This is used for individual Book chapters, excluding chapters from published Conference Proceedings.

This is to be used for technical reports, project reports, documentation, manuals, working paper or discussion paper.

Something within the scope of the repository, but not covered by the other categories.