Article 71: Total assignment of the author's material rights related to future works shall be considered nullified. However, it shall be permissible to vest the National Bureau of Copyrights and Neighboring Rights with the authority to enforce existing and future works related rights. Article 72: The assignment of the author's material rights shall be limited to patterns of work utilization specifically provided for in the contract. Rights assignment shall not be extended to similarly include other patterns or anonymous utilization patterns of works upon contract conclusion. Article 73: The acquisition of a work copy in itself as an absolute property shall not be considered an assignment of the author's material rights. However, the author may not request the owner of the original medium to place the work at his disposal to practice his rights with regard to works of plastic arts and pictorial arts. It shall be permissible for the owner of the work original medium to offer it to the public for non profit purposes without permission, unless the author explicitly excludes this possibility when selling the origin medium. Article 74: The author participating in an audiovisual production shall have the right to use his contribution in a different type unless there are contrary contractual provisions. Article 75: The author participating in an audiovisual production, who refuses to complete his contribution or fails to complete it due to a force majeure, shall not object incorporating his authorship portion in the audiovisual production. However, he shall obtain the capacity of author as a result of such contribution, and he shall withdraw his name from the introduction of the audiovisual work. Article 76: The audiovisual work shall be considered ready and complete when the typical copy thereof is prepared in accordance with the contract concluded between the producer and director. Each amendment to the final form of the audiovisual work by addition or deletion in particular shall be subject to a prior permission from those who approved the work final form. It shall be definitely impermissible to damage the main copy of audiovisual work. Article 77: The moral rights shall be practiced on the final form of the audiovisual work. Article 78: The relations between the co-authors and producer of an audiovisual work shall be determined in a written contract. The producer of the audiovisual work shall be considered the natural or nominal person who initiates its production at his responsibility. The contract of the audiovisual work production shall require, unless otherwise is stipulated, that the right be exclusively assigned in favor of the producer in the following cases: - Reproduce the work for utilization needs or in the form of audio-video recordings prepared to be distributed to public. - Present the produced work in public exhibitions or transmit it via audio or audio-video broadcasting. - Translate or duplicate the work.