1. 1. Blom, S. 1960. Afferent influences on tongue muscle activity. A morphological and physiological study in the cat. Acta Physiol. Scand. 49: 1-97.
2. 2. Cui, S. 1996. Gross anatomy of the hypoglossal nerve in the Bactrian camel. J. Lanzhou Univ. (Nat. Sci.) 31 (Morph. Suppl.): 123-125.
3. 3. Fitzgerald, M. J. T. and Law, M. E. 1958. The peripheral connexions between the lingual and hypoglossal nerves. J. Anat. 92: 178-188.
4. 4. Froriep, A. and Beck, W. 1895. Uber das vorkommen dorsaler hypoglossuswurzeln mit ganglion, in der Reihe der Saugetiere. Anat. Anz. 10: 688-696.
5. 5. Godinho, H. P. and Getty, R. 1975. Peripheral nervous system. pp. 1081-1124. In: Sisson and Grassman's the Anatomy of the Domestic Animals, vol. 1, 5th ed. (Getty, R. ed.), W. B. Saunders Co., Philadelphia.