1. International classification of headache disorders, 2nd edition;International Headache Society Classification Subcommittee;Cephalalgia,2004
2. Rhinolithiais: A review;Appleton;Oral Surg Oral Med Oral Pathol Oral Radiol Endod,1988
3. Rhinolithiasis: An unusual cause of nasal obstruction;Balatsouras;Rhinology,2002
4. Headaches and sinus disease;Blumenthal;Headache,2001
5. Anatomy for endoscopic sinus surgery;Becker;Otolaryngol Clin North Am,1989