HEIMBERGER, Philipp. The structural deficit: methodological problems and political implications. Momentum Quarterly, Innsbruck, Österreich, v. 3, n. 2, p. 125–148, 2014. Disponível em: https://momentum-quarterly-journal.uibk.ac.at/momentum/article/view/1726. Acesso em: 16 feb. 2026.