1. Castell JA, Dalton DB, Castell DO (1990) Pharyngeal and upper esophageal sphincter manometry in humans. Am J Physiol 258:G173–178
2. Castell JA, Dalton CB (1995) Esophageal manometry. In: Castell DO (ed) The esophagus, 2nd edn. Little Brown, Boston Toronto London, pp 133–152
3. DeMeester TR, Stein HJ (1996) Physiologic diagnostic studies. In: Orringer MB, Zuidema GD (eds) Shackelford’s surgery of the alimentary tract, vol 1, The esophagus, 4th edn. Saunders, Philadelphia London Toronto Montreal Sydney Tokyo, pp 120–53
4. Diamant NE (1989) Physiology of esophageal motor function. Gastroent Clin North Am 18:179–194
5. Dodds WJ, Stewart ET, Logemann JA (1990) Physiology and radiology of the normal oral and pharyngeal phases of swallowing. Am J Radiology 154:953–963