1. BURSILL, A. E., & SHIGEHISA, T. 1972 Heteromodal stimulation, personality and the inverted-U function. Bulletin of British Psychological Society, 25, 70.
2. EYSENCK, H. J., & EYSENCK, S. B. G. 1964 Manual of the Eysenck personality inventory. London: University of London Press.
3. FIEANDT, K. 1966 The world of perception. Homewood, Ill.: Dorsey Press.
4. HORNBOSTEL, E. M., v. 1925 Die Einheit der Sinne. Melos, 4, 290-297.
5. HORNBOSTEL, E. M., v. 1931 Über Geruchshelligkeit. Pflügers Archiv für die gesamte Physiologie, 227, 517-538.