it is a photograph and 30 years have passed since creation (Article 84)
it is an audiovisual work and 50 years have passed since publication (Article 40)
it is a work published anonymously or posthumously within 30 years of the author's death, and 60 years have passed since publication (Articles 38 and 39)
it is another kind of work and 50 years have passed since the death of the author (Article 36)