1. Kutina AV. Chronic sfenoidit, neurological symptoms, modern approach to diagnosis and treatment. Rossiiskaya rinologiya. 2013;2(63):62-65. (In Russ.)
2. Buzychkin VN. Vozrastnye i individual'nye osobennosti stroenija klinovidnyh pazuh i ih znachenie dlja kliniki i lechenija sfenoidita [dissertation]. Moscow; 2006:22. (In Russ.) https://medical-diss.com/docreader/277359/d#?page=1
3. Cheglakova EN. Varianty anatomicheskogo stroenija klinovidnyh pazuh i ih klinicheskoe znachenie [dissertation]. Saint Petersburg; 2011:24. (In Russ.) https://medical-diss.com/docreader/352918/a#?page=20
4. Mel'nik VF. Methods for the surgical treatment of chronic sphenoiditis and ethmoiditis. Vestnik otorinolaringologii. 2013;78(1):68-71. (In Russ.)
5. Kiselev AS, Rudenko D.V., Lushnikova T.A. Pneumatosinus of the sphenoid bone: clinical and radiologic presentations. Rossiiskaya rinologiya. 1995;(3-4):63-67. (In Russ.)