ALFRED CHEN, J. Factoring threefold divisorial contractions to points. ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE, [S. l.], v. 13, n. 2, p. 435-463, 2014. DOI: 10.2422/2036-2145.201106_001. Disponível em: http://20.103.181.36/index.php/annaliscienze/article/view/344. Acesso em: 10 jun. 2025.