The following are to be regarded as authorized: (a) all manuscripts of a work in whose production the author was involved or that were produced under his instructions (and demonstrably controlled by him); (b) all printings whose production the author wished or approved and whose text he influenced by delivering the setting copy or by revising or arranging for revisions during the printing process.

(Zeller 1995, 26)

Contributed by Wout. View changelog.