National Migraine Centre
Incidence of migraine relative to menstrual cycle phases of rising and falling estrogen
2006 · E. Anne MacGregor, Alison Frith, et al. · Neurology
Efficacy of feverfew as prophylactic treatment of migraine.
1985 · E. S. Johnson, Nakul Kadam, et al. · BMJ
Climate, present, past and future
1972 · M. T. Tullett · Palaeogeography Palaeoclimatology Palaeoecology