I. Papousek, E. M. Weiss, E. M. Reiser, G. Schulter, H. Harald Freudenthaler, and H. K. Lackner, “Self-rated social-emotional perception and its neurophysiologic and cardiac correlates while viewing a film showing the suffering of other people”, Int. j. psychol. res., vol. 6, pp. 42–45, Oct. 2013.