Authorial authorization indicates the period of time during which the text of a version represents the work for the author. Authorial authorization originates with the writing of the version in question by the author or undertaken under his or her instruction, and likewise with the authorially derived or approved publication or printing of such a version, and ends with its replacement by a new version of the text, or with the death of the author.

(Scheibe 1995, 207)

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