KOZŁOWSKI, W.; PIERZCHALSKI, A. Natural boundary value problems for weighted form Laplacians. ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE, [S. l.], v. 7, n. 2, p. 343-367, 2009. DOI: 10.2422/2036-2145.2008.2.06. Disponível em: https://journals.sns.it/index.php/annaliscienze/article/view/152. Acesso em: 20 feb. 2026.