1. 1. Standring S. Grays Anatomy. The anatomical basis of clinical practice. 40th edn. Churchill Livingstone, Elsevier 2008.
2. 2. Loh LE, Chee TS, John AB. The anatomy of the fossa of rossenmuller-its possible influence on the detection of occultnasopharyngeal carcinoma. Singapore Medical Journal 1991;32(3):154-5.
3. 3. Shepperd HWH. Scott-Brown's diseases of the ear nose and throat, vol 1: basic sciences. 4th edn. J R Soc Med 1980;73(11):834.
4. Physiology of the eustachian tube in the pathogenesis and management of middle-ear effusions;Bluestone;Laryngoscope,1972
5. 5. Koch KHH. Skeletal growth analysis five years after completion of primary treatment of children with a sailing palate vomer Malformation, Giesen, Germany: University of Giesen Thesis 1994.