Tkaczyk, E. (2020) “Judgement of the Constitutional Tribunal relating to an invalid regulation. A gloss to the decision of the Constitutional Tribunal of 30 October 2019, file no. P 1/18 (Journal of Laws, item 2196)”, The Opole Studies in Administration and Law, 18(3), pp. 155–165. doi: 10.25167/osap.2594.