Lucas S, Hoffman JM, Bell KR, Dikmen S. A prospective study of prevalence and characterization of headache following mild traumatic brain injury. Cephalalgia 2014; 34: 93-102.
Lucas S, Hoffman JM, Bell KR, Walker W, Dikmen S. Characterization of headache after traumatic brain injury. Cephalalgia 2012; 32: 600-606.
Olesen J. Problem areas in the International Classification of Headache Disorders, 3rd edition (beta). Cephalalgia 2014; 34: 1193-1199.
Theeler BJ, Erickson JC. Post-traumatic headaches: time for a revised classification? Cephalalgia 2012; 32: 589-591.
Theeler BJ, Flynn FG, Erickson JC. Headaches after concussion in US soldiers returning from Iraq or Afghanistan. Headache 2010; 50: 1262-1272.
Theeler B, Lucas S, Riechers RG, Ruff RL. Post-traumatic headaches in civilians and military personnel: a comparative, clinical review. Headache 2013; 53: 881-900.