'authorship' definitions:

Definition of 'authorship'

From: WordNet
noun
The act of creating written works; "writing was a form of therapy for him"; "it was a matter of disputed authorship" [syn: writing, authorship, composition, penning]
noun
The act of initiating a new idea or theory or writing; "the authorship of the theory is disputed" [syn: authorship, paternity]

Synonyms of 'authorship'

From: Moby Thesaurus