Jakab N, Solymosi-Szekeres B. The Theoretical Issue of Social Security—International and European Perspectives. In: Jakab N, editor. Sustainability Of The Social Security System: Demographic Challenges and Answers in Central Europe [Internet]. Legal Studies on Central Europe; 2023 [cited 2025 Aug. 3]. pp. 19–50. Available from: https://books.ceapublishing.hu/index.php/lsce/catalog/book/33/chapter/360