Migraine:A Pharmacologic Review with Newer Options and Delivery Modalities
Neurol 44:S13-S17, Baumel,B., 1994
Chronic headache:Appropriate Use of Opiate Analgesics
Neurol 44:S18-S24, Markley,H.G., 1994
Cluster Headache, Local Anesthetic Abortive Agents
Arch Neurol 42:496-498, Kittrelle,J.P.,et al, 1985