page 11 (a) during official or religious ceremonies, to the extent justified by the nature of these ceremonies; (b) as part of the activities of an educational institution, for the staff and students of such an institution, provided the public consists solely of staff and students of the institution, or parents and supervisors, or other persons directly linked to the institution’s activities. Import for Personal Reasons Article 24 Notwithstanding the provisions of Article 10(g) above, the import of a copy of a work by a natural person, for personal reasons, shall be permitted without the authorization of the author or of any other owner of the copyright in the work. Chapter V Duration of Protection General Provisions Article 25 Unless otherwise specified in this chapter, the economic rights in a work shall be protected during the author’s lifetime and for 70 years after his death. Moral rights shall have no time limitation, and shall be exempt from prescription, inalienable and transferable to successors in title in the case of death. Duration of Protection for Collaborative Works Article 26 The economic rights in a collaborative work shall be protected during the lifetime of the last surviving author and for 70 years after his death. Duration of Protection for Anonymous and Pseudonymous Works Article 27 The economic rights in a work published anonymously or under a pseudonym shall be protected until the end of a 70-year period from the end of the calendar year when such a work was lawfully published for the first time or, where such an event has not occurred in the 50 years since the work was produced, 70 years from the end of the calendar year when such a work was made available to the public or, where this has not occurred in the 50 years since the production of this work, 70 years from the end of the calendar year of such production. If, prior to the expiry of said period, the identity of the author is revealed unambiguously, the provisions of Article 25 or 26 above, shall apply. Duration of Protection for Collective and Audiovisual Works Article 28 The economic rights in a collective or audiovisual work shall be protected for a period of 70 years from the end of the calendar year when such a work was lawfully published for the first time or, where such an event has not occurred in the 50 years since the work was published, 70 years from the end of the calendar year when such a work was made available to the 11