1. Pott P. The Chirurgical Works of Percival Pott, FRS, Vol. 1. London: Wood and Innes, 1808: 41.
2. Metastatic adenocarcinoma of the frontal sinus;Toomey;Arch. Otolaryngol.,1967
3. Metastasis of clear cell renal cancer to the nose and nasal sinuses;Wysocki;Wiad. Lek.,1994
4. Primary carcinoma of the frontal sinus;Brownson;Laryngoscope,1971