STEFAN, Barbara. The Democracy Index: On the scientific practice of norming democracy as an instrument of political power. Momentum Quarterly, Innsbruck, Österreich, v. 4, n. 3, p. 187–204, 2015. Disponível em: https://momentum-quarterly-journal.uibk.ac.at/momentum/article/view/1746. Acesso em: 17 feb. 2026.