Diagnosing the Severe HeadacheNeurol 44:S6-S12, Dalessio,D.J., 1994
Head Pain, In Clinical SymposiaCiba Co, Vol 46, p 2-34994., Diamond,S., 1994
The Headache Profile of Idiopathic Intracranial HypertensionCephalgia 10:331-335, Wall,M., 1990