2) A.T.Birmingham: Sympathetic denervation of the smooth muscle of the vas deferens, J. Physiol., 206, 645-661 (1970).
3) J.S.Dixon and J.A.Goshing: The distribution of autonomic nerves in the musculature of the rat vas deferens. A light and electron microscope investigation, J. Comp. Neurol. 146. 175-188(1972).