Source literature

It might, for example, be cited and used as sources in academic writings, and then called the literature on the subject.

These journals are the source literature from the point of view of this index.

The publishing of such sources requires knowledge of text philology and other fields.

But this kind of expertise put into the publishing of source literature should be differentiated from the kind of expertise needed in order to use the sources in, for example, historical research.

A historian may or may not use such "source literature" and on the basis of his research publish a paper, which in the UNISIST model is considered primary literature.