Biswas, Sudhangshu Shekhar, et al. “Endonasal Endoscopic Excision of Juvenile Nasopharyngeal Angiofibroma- The Technical Difficulties & Advantages”. BIRDEM Medical Journal, vol. 4, no. 2, Nov. 2014, pp. 74-78, doi:10.3329/birdem.v4i2.33192.