Cohen-Kadosh, R., Henik, A., Rubinsten, O., Mohr, H., Dori, H., Van de Ven, V., Zorzi, M., Hendler, T., Goebel, R., & Linden, D. (2005). Are numbers special? The comparison systems of the human brain investigated by fMRI. Neuropsychologia, 43, 1238-1248.