K., A., G. S. M., S. V., N. S., and M. R. “A Comparative Study of Parapharyngeal Space Tumors over a 7 Year Period Experience in Tertiary Care Hospital”. International Journal of Otorhinolaryngology and Head and Neck Surgery, vol. 4, no. 5, Aug. 2018, pp. 1167-72, doi:10.18203/issn.2454-5929.ijohns20182958.