Sterling, P; Kuypers, HG (February 1967). "Anatomical organization of the brachial spinal cord of the cat. I. The distribution of dorsal root fibers". Brain Research. 4 (1): 1–15. doi:10.1016/0006-8993(67)90144-8. PMID4166091.
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"LOC Entry". Library of Congress. Retrieved 28 October 2019.
Sterling, P; Kuypers, HG (February 1967). "Anatomical organization of the brachial spinal cord of the cat. I. The distribution of dorsal root fibers". Brain Research. 4 (1): 1–15. doi:10.1016/0006-8993(67)90144-8. PMID4166091.