A string that is used as the author.name of some author. Often databases of author names are kept separately from databases of people or documents.
(Exact-Range Author.Name Author-Name)
(Nth-Domain Doc.Author.Name 3 Author-Name) (=> (Doc.Author-Name $X $Y) (Author-Name $Y)) (=> (Ref.Author $X $Y) (Author-Name $Y))