The works can be used without permission of the right holder only for promotion of the exhibitions.  The artworks in photographies published on BIBIANA's web site to promote exhibitions organized by BIBIANA are subject to copyright protection under copyright law. BIBIANA is not the right holder; the right holder is the author or his heirs. The work is copyrighted until 70 years after the (last surviving) author's death. Photographies of the publicised artworks can be used only with prior permission from the author or his/her heirs or the institution that represents the author, otherwise the user violates author's personal rights