On amicus curiae and the participation of trade unions in appeals of unconstitutionality: Commentary to Order of the Constitucional Court 125/2022, of September 29. Concerning the action of unconstitutionality num. 2191-2022. RCG [Internet]. 2023 Jun. 30 [cited 2026 Sep. 15];(115):453-92. Available from: https://revista.cortesgenerales.es/rcg/article/view/1761