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Article 50: In the event of assignment of an exploitation right, where the author has
suffered a loss of over seven twelfths as a result of injury or an underestimation of the
anticipated proceeds of the work, he may seek a review of the terms of the contract
relating to price.
Such request may be made only in cases where the work has been assigned against
payment of a lump sum.
The injury shall be assessed taking into consideration the full extent of the exploitation by
the assignee of the works of the author who claims to have been injured.
Article 51: Any assignment clause conferring the right to exploit the work in a form that
was unforeseeable or unforeseen on the date of the contract must be explicit and must
stipulate a share that is correlated to the profits of exploitation.
Article 52: In addition to his monetary rights, the author shall have a general lien on the
debtor's property. The lien shall outlast bankruptcy and courtordered liquidation. It
shall be exercised after employees' salaries have been guaranteed.
Section 2: Publishing contracts
Article 53: A publishing contract shall be a contract under which the author of a work of
the mind or his successors in title assign to a person known as a publisher, under
specified conditions, the right to make or have made a number of copies of the work, and
under which the publisher is required to effect the publication and dissemination thereof.
Article 54: A contract known as a contract at the author's expense shall not constitute a
publishing contract.
Under such contract, the author or his successors in title shall pay to the publisher an
agreed remuneration against which the publisher shall make a number of copies of the
work in the form and in accordance with the modes of expression specified in the
contract, and effect the publication and dissemination thereof.
Such contract shall constitute a contract for services governed by convention, usage and
the provisions of the Civil Code.
Article 55: A contract known as a contract at joint expense shall not constitute a
publishing contract.
Under such contract, the author or his successors in title shall commission a publisher to
make, at his expense, a number of copies of the work in the form and in accordance with
the modes of expression specified in the contract and to effect publication and
dissemination thereof in accordance with the agreement reciprocally contracted to share
the profits and losses of exploitation in the agreed proportion.