Gegenfurtner, KR Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society;
Gegenfurtner, K. (1998). Thresholds for the identification of the direction of motion of plaid patterns defined by luminance or chromatic contrast. Vision Research, 38(6), 881-888. doi:10.1016/S0042-6989(97)00214-9.