This work was first published in Niger and is now in the public domain because its copyright protection has expired by virtue of the Ordinance No. 2010-95 (details). The work meets one of the following criteria:
It is an anonymous work or pseudonymous work and 70 years have passed since the date of its publication (or creation, whatever date is the latest)
It is a collective or audiovisual work, and 70 years have passed since the date of its publication (or creation, whatever date is the latest)
It is a work of applied art and 25 and years have passed since the date of its creation
It is another kind of work, and 70 years have passed since the year of death of the author (or last-surviving author)
It is one of "official texts of a legislative, administrative or judicial nature, or to the official translations thereof"
