SANDU, G. .; TANNINEN, T. . THE BIRTH OF MODAL LOGIC IN NORTHERN EUROPE. Bulletin of Taras Shevchenko National University of Kyiv. Philosophy, [S. l.], v. 2, n. 2, p. 9-19, 2017. DOI: 10.17721/2523-4064.2017/2-2/7. Disponível em: https://bulletinphilosophy-knu.kyiv.ua/index.php/journal/article/view/9. Acesso em: 11 jul. 2026.