ARTAL BARTOLO, E.; FLORENS, V.; GUERVILLE-BALLÉ, B. A topological invariant of line arrangements. ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE, [S. l.], v. 17, n. 3, p. 949-968, 2017. DOI: 10.2422/2036-2145.201509_014. Disponível em: http://20.103.181.36/index.php/annaliscienze/article/view/518. Acesso em: 27 may. 2025.