Pedrini, Francesca A., et al. “Unilateral Absence of Casserio’s Nerve and a Communicating Branch to the Median Nerve. An Additional Variant of Brachial Flexors Motor Innervation”. Italian Journal of Anatomy and Embryology, vol. 124, no. 1, May 2019, pp. 16-25, doi:10.13128/IJAE-25466.