Hellas.bst is a BibTeX style, based on the standard plain style, for typesetting databases that containing both Greek and non-Greek bibliographic records. For most bibliographic record types there is an equivalent record type whose name begins with the prefix gr-. These gr-something records may have fields translator and original-title in addition to the fields one might expect in a standard BibTeX record.

The author is Apostolos Syropoulos.