Unaltered, Endoscopic View of the Sphenoethmoid Recess Through the Second Pass.

Paolo Cappabianca, Luigi Maria Cavallo, Isabella Esposito, Domenico Solari, Sellar/Tuberculum Approach Karger Publishers. ,vol. 26, pp. 41- 59 ,(2012) , 10.1159/000329136

Hyun-Ung Kim, Sung-Shik Kim, Seong Seok Kang, In Hyuk Chung, Jeung-Gweon Lee, Joo-Heon Yoon, Surgical anatomy of the natural ostium of the sphenoid sinus. Laryngoscope. ,vol. 111, pp. 1599- 1602 ,(2001) , 10.1097/00005537-200109000-00020

Michael J. Wareing, Nigel D. Padgham, Osteologic Classification of the Sphenopalatine Foramen Laryngoscope. ,vol. 108, pp. 125- 127 ,(1998) , 10.1097/00005537-199801000-00024