RohrJDufresneJJ. Dihydroergotamine nasal spray for the treatment of migraine attacks: A comparative double-blind crossover study with placebo. In: OlesenJTfelt-HansenPJensenK ed. Headaches 1985. Copenhagen: Stougaard Jensen1985: 142–143.
2.
LatasteX.Dihydroergotamine nasal spray, In: FerrariMLatasteX. ed. Migraine and Other Headaches. Lancs. The Parthenon Publishing Group1989: 249–260.