An article is a piece published in a journal, magazine, or newspaper.
(Compose Doc.Title Ref.Document)
(Inherited-Facet-Value Same-Slot-Values Article-Reference Ref.Periodical (Compose Doc.Title Ref.Document))
(=> (= (Ref.Volume ?Ref) ?Number) (Or (Book-Reference ?Ref) (Book-Section-Reference ?Ref) (Article-Reference ?Ref))) (=> (Ref.Issue $X $Y) (Article-Reference $X)) (=> (= (Ref.Pages ?Ref) ?Page-Range) (Or (Book-Section-Reference ?Ref) (Article-Reference ?Ref) (Proceedings-Paper-Reference ?Ref))) (=> (= (Ref.Month ?Ref) ?Month) (Or (Article-Reference ?Ref) (Technical-Report ?Ref))) (=> (= (Ref.Day ?Ref) ?Day) (Or (Article-Reference ?Ref) (Personal-Communication-Reference ?Ref))) (Subclass-Partition Publication-Reference (Setof Book-Reference Book-Section-Reference Article-Reference Proceedings-Paper-Reference Thesis-Reference Technical-Report-Reference Misc-Publication-Reference))