Villringer, K., Kurth, R., Repenthin, J., Stoll, T., Curio, G., Schwiemann, J., et al. (1998). FMRI mapping of digital and facial sites in human brodmann area 3b. NeuroImage, 7(4, Part II): S403. doi:10.1016/S1053-8119(18)31236-9.