1. Pathologic basis of disease;Robbins,1979
2. Pathologic conditions involving the maxillary sinus: Their appearance on panoramic radiographs;Nortje;Br J Oral Surg,1979
3. Nasal polyposis—a multidisciplinary study;Frenkiel;J Otolaryngol,1982
4. Diseases of the nose, throat, ear, head, and neck;Ballenger,1977
5. Oroantral fistula: an analysis of 100 cases;Norman;Oral Surg,1971