D. McNeill, Hand and mind : what gestures reveal about thought. University of Chicago Press, 1992.
W. S. Condon and W. D. Ogston, ”Sound film analysis of normal and pathological behavior patterns.,” J. Nerv. Ment. Dis., vol.143, no.4, pp.338-47, Oct. 1966.
F. J. Bernieri, ”Coordinated movement and rapport in teacher-student interactions,” J. Nonverbal Behav., vol.12, no.2, pp.120-138,1988.
S. S. Wiltermuth and C. Heath, ”Synchrony and Cooperation,” Psychol. Sci., vol.20(1), no.1, pp.1-5, 2008.