(1) The penal law shall not be applied to acts of persons whose criminal liability has been excluded because of immunity pursuant to the provisions of the constitution or international law regulations. (2) When the law determines that the perpetrator shall be prosecuted for a criminal offence on the complaint or private action, then such provision shall not be applied to the person, against whom the injured party (hereinafter, the injured party) did not submit a complaint or a private action, or withdrew it. 2. Applicability in time Application of a Later, Least Severe Law for the Perpetrator Article 7 (1) The perpetrator of a criminal offence shall be subject to the statutory provisions which were applicable at the time the criminal offence was committed. (2) If the law is altered subsequent to the committing of a criminal offence (one or more times), provisions providing for the least severe sentence shall apply to the perpetrator. (3) Paragraphs 1 and 2 of this Article shall apply also in relation to the applicability in time of regulations, to which the Penal Code refers. If because of the change of such regulation the criminal offence is not only defined differently, but also represents another unlawful action, the Penal Code shall be changed as well and the provisions providing for the least severe sentence shall apply to the perpetrator, because his act is not defined as a criminal offence. Laws of Limited Duration Article 8 The Penal Code or other regulation, to which the Penal Code refers, that should be valid only for a limited duration, may be applied unless otherwise determined also after the expiry of the duration if the criminal offence was committed, when the Penal Code or the regulation was still valid. Simultaneous Application of the General Part of This Penal Code and Other Penal Laws Article 9 (1) The provisions of the general part of this Penal Code shall apply also to criminal offences, defined by other laws or ratified and issued international agreements or European Union acts, unless otherwise determined therein.