Efficacy of Sphenopalatine Ganglion Blockade in 66 Pts Suffering from Cluster Headache
J Neurosurg 87:876-880, Sanders,M.&Zuurmond,W.W.A., 1997
Cluster Headache Syndrome
Postgrad Med 91:96-104, Marks,D.R.&Rapoport,A.M., 1992
Cluster Headache
Neurol 42 (Suppl 2) :22-31992., Mathew,N.T., 1992
Surgical Teatment of Chronic Cluster Headache
Mayo Clin Proc 61:537-544, Onofrio,B.M.&Campbell,J.K., 1986