1. 1. Dodds WJ, Stewart ET, Logemann JA. Physiology and radiology of the normal oral and pharyngeal phases of swallowing. Am J Roentgenol 154: 953-963, 1990.
2. 2. Logemann JA. Manual for the Videofluorographic Study of Swallowing, 2nd ed. 1-153, Texas: PRO-ED, 1993.
3. 3. Kaneko H, Hayashi T, Nakamura Y et al. Evaluation of swallowing function by simultaneous measurement of larynx movement, electromyogram of suprahyoid musculature and swallowing sound —Change of swallowing motion of rice gruel due to the difference of its property—. IEICE Technical Report, MBE 101: 135-142, 2001.
4. 4. Hayashi T, Kaneko H, Nakamura M et al. Relationship between rice-gruel properties and swallowing motion. Jpn J Dysphagia Rehabil 6: 73-81, 2002.
5. An electronic device measuring the frequency of spontaneous swallowing: Digital Phagometer