Macfarlane, Nicholas, and Michael SA Graziano. 2009. “Diversity of Grip in Macaca Mulatta”. Experimental Brain Research 197 (3): 255-68. doi:10.1007/s00221-009-1909-z.

Graziano. 2001. “Is Reaching Eye-Centered, Body-Centered, Hand-Centered, or a Combination?”. Reviews in the Neurosciences 12 (2): 175-85. Referenced from www.degruyter.com: Is reaching eye-centered, body-centered, hand-centered, or a combination?.