19 (5) In the case of a work alleged to be a work of joint authorship, subsections (1), (2) and (3) shall apply in relation to each person alleged to be one of the authors of the work, as if references in those subsections to the author were references to one of the authors. (6) Where, in an action for infringement in respect of a literary, musical or artistic work, a compilation or a computer program, subsection (1) does not apply, but— (a) the work qualifies for copyright protection by virtue of the country of its first publication; and (b) a name purporting to be that of the publisher appeared on copies of the work as first published; then, subject to subsection (1), the person whose name so appeared on shall be presumed to have been the owner of that copyright at the time of the publication. (7) Where, in an action for infringement in respect of a literary musical or artistic work, a compilation or a computer program, it is established that the author of the work is dead— (a) the work shall be presumed to be an original work; and (b) if it is alleged by the plaintiff that a publication on a specified date in a specified country was the first publication of the work, that publication shall be presumed to have been the first publication of the work and to have taken place in that country and on that date. Affidavit admissible in evidence 32.—(1) Subject to this section, an affidavit or statutory declaration by any person claiming to be the owner of the copyright in any work eligible for copyright under this Act or by his agent, stating that— (a) at a time specified therein copyright subsisted in the work; (b) the person is the owner of the copyright; and (c) a copy of the work annexed thereto is a true copy thereof; shall be admissible in any proceedings under this Act as prima facie evidence of the facts contained therein. (2) Where the affidavit or declaration is made by an agent of the person claiming to be the copyright owner, the document setting forth the agent’s authority to act in the matter shall be annexed to the affidavit or declaration. (3) If the ownership of the copyright is claimed by a body of persons (whether corporate or unincorporated), the affidavit or declaration shall be made by a responsible officer of the body. (4) Where the affidavit or declaration is made outside Zambia, the signature of the person before whom it is made shall be authenticated in accordance with the Authentication of Documents Act. Issue of warrants to enter, search and seize 33.—(1) Where information is given on oath to a Magistrate that there is reasonable cause for suspecting that there is in any house or premises any infringing copy or any article used or intended to be used for making infringing copies, or any other article, book or