1. Wertheimer, M. Z. Psychol. 61, 161–265 (1912).
2. Kolers, P. Aspects of Motion Perception. (Pergamon, New York, 1972).
3. Bogen, J. E. & Vogel, P. J. in Les Syndromes de Disconnexion Calleuse Chez l'Homme (eds Michel, F. & Schott, B.) 227–251 (Hopital Neurologique, Lyon, 1975).
4. Bogen, J. E. in Clinical Neuropsychology (eds Heilman, K. M. & Valenstein, E.) (Oxford University Press, 1979).
5. Sperry, R. W. Am. Psychologist. 23, 723–733 (1968).