1. Clinico-pathologic prognostic factors in laryngeal and pharyngological tumors. I. carcinoma of the pyriform sinus;Suarez;Acta Otorrinolaringol Esp,1993
2. Epithelioma of the pyriform sinus: retrospective study and survival analysis after 5 years;Morant;Acta Otorrinolaringol Esp,1992
3. Exclusive radiotherapy of pyriform sinus carcinomas. Retrospective analysis of 90 cases;Krengli;Radiol Med (Torino),1993
4. Exclusive radiotherapy of carcinoma of the hypopharynx. Retrospective study of a series of 100 patients;Antognoni;Radiologia Medica (Torino),1991
5. Radiotherapy, radiotherapy combined with surgery, radiotherapy combined with chemotherapy in the treatment of carcinoma of the pyriform sinus. A retrospective study;Bolner;Radiol Med (Torino),1991