1. Basmajian JV, De Luca CJ:Muscles Alive, 5th ed. Baltimore:Williams and Wilkins, 1985, p 65
2. Basmajian JV:Computers in Electromyography. Boston: Butterworths, 1975
3. Desmet J:Computer-Aided Electromyography. New York: Karger, 1983
4. Loeb GE, Gans C:Electromyography for Experimentalists. Chicago: The University of Chicago Press, 1986
5. Hairston LE, Sauerland EK: Electromyography of the human pharynx: discharge patterns of the superior pharyngeal constrictor during respiration.Electromyog Clin Neurophysiol 21:299?306, 1981