Roberts B, Harris MG, Yates TA. The roles of inducer size and distance in the Ebbinghaus illusion (Titchener circles). Perception. 2005, 34 (7): 847–56. PMID 16124270. doi:10.1068/p5273.
Roberts B, Harris MG, Yates TA. The roles of inducer size and distance in the Ebbinghaus illusion (Titchener circles). Perception. 2005, 34 (7): 847–56. PMID 16124270. doi:10.1068/p5273.