Haberl, Sonja. “Hartz IV, Il Sistema Delle Sanzioni E Ciò Che Il Bundesverfassungsgericht (non) Ha Detto: The Hartz IV System, Benefit Sanctions and What the German Federal Constitutional Court Did (not) Mean to Say”. DPCE Online 45, no. 4 (January 18, 2021). Accessed April 30, 2025. https://www.dpceonline.it/index.php/dpceonline/article/view/1180.