Munjal, M., Sethi, S., Vohra, H., Munjal, S., Prabhakar, A., Garg, S., Pooni, N., Gill, A. S. and Dhillon, K. (2020) “The non-invasive assessment of the sphenoid sinus: a review”, International Journal of Otorhinolaryngology and Head and Neck Surgery, 7(1), pp. 202–206. doi: 10.18203/issn.2454-5929.ijohns20205651.