KUWERT, E.; SCHÄTZLE, R. Closed surfaces with bounds on their Willmore energy. ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE, [S. l.], v. 11, n. 3, p. 605-634, 2012. DOI: 10.2422/2036-2145.201010_004. Disponível em: https://journals.sns.it/index.php/annaliscienze/article/view/274. Acesso em: 20 feb. 2026.