Colman, I.; Brown, M. D.; Innes, G. D.; Grafstein, E.; Roberts, T. E.; Rowe, B. H. (2005). “Parenteral Dihydroergotamine for Acute Migraine Headache: A Systematic Review of the Literature”. Annals of Emergency Medicine45 (4): 393–401. doi:10.1016/j.annemergmed.2004.07.430. PMID15795718.
Saper, J. R.; Silberstein, S.; Dodick, D.; Rapoport, A. (2006). “DHE in the pharmacotherapy of migraine: potential for a larger role”. Headache46 (Suppl 4): S212–S220. doi:10.1111/j.1526-4610.2006.00605.x. PMID17078853.
Colman, I.; Brown, M. D.; Innes, G. D.; Grafstein, E.; Roberts, T. E.; Rowe, B. H. (2005). “Parenteral Dihydroergotamine for Acute Migraine Headache: A Systematic Review of the Literature”. Annals of Emergency Medicine45 (4): 393–401. doi:10.1016/j.annemergmed.2004.07.430. PMID15795718.
Saper, J. R.; Silberstein, S.; Dodick, D.; Rapoport, A. (2006). “DHE in the pharmacotherapy of migraine: potential for a larger role”. Headache46 (Suppl 4): S212–S220. doi:10.1111/j.1526-4610.2006.00605.x. PMID17078853.