Deka, A., Saikia, S. P., & Bhuyan, S. K. (2010). Combined posterior flap and anterior suspended flap dacryocystorhinostomy: A modification of external dacryocystorhinostomy. Oman Journal of Ophthalmology, 3(1), 18-20. https://doi.org/10.4103/0974-620x.60016