BJÖRN, A.; BJÖRN, J. A uniqueness result for functions with zero fine gradient on quasiconnected and finely connected sets. ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE, [S. l.], v. 21, n. special, 1-2, p. 293-301, 2020. DOI: 10.2422/2036-2145.201802_014. Disponível em: https://journals.sns.it/index.php/annaliscienze/article/view/907. Acesso em: 20 feb. 2026.