GENERAL PART
SECTION I. CRIMINAL LAW
CHAPTER 2. CRIMINAL LAW BOUNDS
Article 7. The Criminal Law Force in Time
(1) Criminality and penality of an act shall be determined by law effective at the time such act was committed.
(2) The law that eliminates penality of an act or mitigates sentence is retroactive, i.e. applied to persons who committed the crime before the effective date of such law, including those serving or having served sentence but having prior conviction.
(3) The law that determines penality of act, aggravates sentence or otherwise deteriorates the state of the person shall not have retroactive effect.
EDIT.