GHULAM SABIR. Diagnosis of Obstruction in Epiphora by Dacryocystography. Journal of Rawalpindi Medical College, Rawalpindi, Pakistan, v. 12, n. 2, 2009. Disponível em: http://www.journalrmc.com/index.php/JRMC/article/view/750. Acesso em: 2 jan. 2026.