1. Tfelt-Hansen P, Saxena PR, Ferrari MD: Ergot alkaloids. In Handbook of Clinical Neurology, vol 21, Intoxications of the nervous system. Part II. Edited by Wolf FA. Amsterdam: Elsevier; 1995:61–78.
2. Tfelt-Hansen P, Saxena PR: Ergot alkaloids in the acute treatment of migraine. In The Headaches. Edited by Olesen J, Tfelt-Hansen P, Welch KMA. Philadelphia: Lippincott Williams & Wilkins; 2000:399–409. This reference presents an excellent and extensive review of the ergot alkaloids in the acute treatment of migraine.
3. Graham JR, Wolff HG: Mechanism of migraine headache and action of ergotamine tartrate. Arch Neurol Psychiatr 1938, 39:737–763.
4. Buzzi MG, Moskowitz MA: Evidence for 5-HT1B/1D receptors mediating the antimigraine effect of sumatriptan and dihydroergotamine. PMID 1991, 11:165–168.
5. Buzzi MG, Moskowitz MA, Peroutka SJ, Byun B: Further characterization of the putative 5HT receptor which mediates blockade of neurogenic plasma extravasation in rat dura mater. Br J Pharmacol 1991, 103:1421–1428.