The Principles of Subsidiarity and Effectiveness: Two Pillars of an Effective Remedy for Excessive Length of Proceedings within the Meaning of Article 13 ECHR. PYIL [Internet]. 2021 Jul. 19 [cited 2025 Oct. 3];39:159-85. Available from: https://czasopisma.inp.pan.pl/index.php/pyil/article/view/2396