BHARDWAJ, A.; SINGH, K.; SHARMA, K.; CHALIA, D.; PAL, S. Lacrimal syringing versus combined lacrimal probing and syringing for treatment of congenital nasolacrimal duct obstruction in children. International Journal of Medical Research and Review, v. 4, n. 6, p. 964-970, 30 Jun. 2016.