An author is a physical person who created the written work (hereinafter: work).

An author is considered a person whose name, pseudonym or mark is usually indicated in the work or stated when publishing a work, unless proven otherwise. If the author is not known, it is considered that the person who issued the work is authorized to exercise the copyright in the work, and if the name, the alias or the sign of that person is not indicated, the person who published the work is considered an authorized person. If the identity of the author of the work is determined, the person who issued or published the work is obliged to transfer to the author all the revenues and other rights arising from the copyright.

If the work of authorship is created by the joint creative work of two or more persons and makes it an indivisible whole, all co-authors have a joint copyright on the work. Copyrights are made jointly by all co-authors, and the co-author must not prohibit the exercise of these rights by other co-authors contrary to the principle of conscientiousness and honesty. Co-author shares are determined in proportion to the actual contributions of each co-author in the creation of a work.

Two or more authors can combine their works for joint exploitation. Copyrights on this work are made jointly by all authors of connected works, and one author may not prohibit the exercise of these rights by other authors of the connected work in contravention of the principle of conscientiousness and honesty. The shares of the authors of the combined works are determined in proportion to the actual contribution of each individual author in the merged work.