1. Mayer DJ, Frenk H. The role of neuropeptides in pain. In: Nemeroff CB, ed., Neuropeptides in Psychiatric and Neurological Disorders. Baltimore: Johns Hopkins University Press. 1988; p. 201.
2. Sessle BJ. Neural mechanisms of oral and facial pain. Otolaryngol Clin North Amer 1989;21:1059–1072.
3. Finger TE, et al. Affector and effector functions of peptidergic innervation of the nasal cavity. In: Green BG, Mason JR, Kare MR, eds., Chemical Senses, Vol. 2: Irritation. New York: Marcel Dekker, 1990; pp. 1–17.
4. Lucier GE, Egizii R. Characterization of cat nasal afferents and brain stem neurones receiving ethmoidal input. Exp Neurol 1989; 103:83–89.
5. Lucier GE, Egizii R. Central projections of the ethmoidal nerve of the cat as determined by the horseradish peroxidase tracer technique. J Comp Neurol 1986; 247:123–132.