Zihl, J. AG Zihl, Josef, Florian Holsboer (Direktor), Max Planck Institute of Psychiatry, Max Planck Society;
Hess, R. F., Zihl, J., Pointer, J. S., & Schmid, C. (1990). The contrast sensitivity deficit in cases with cerebral lesions. Clinical Vision Sciences, 5, 203-215.