Cluster headache
A. May, M. Leone, J. Áfra, M. Linde, P. S. Sándor, S. Evers, P. J. Goadsby: EFNS guidelines on the treatment of cluster headache and other trigeminalautonomic cephalalgias. European Journal of Neurology. 2006; 13: 1066–1077. PMID 16987158. Free full text (PDF)