Sarkar S, Peek C, Kraus JF. "Fatal injuries in motorcycle riders according to helmet use." J Trauma. 1995 Feb;38 (2) :242-5. PMID7869444
Stella J, Cooke C, Sprivulis P. "Most head injury related motorcycle crash deaths are related to poor riding practices." Emerg Med (Fremantle). 2002 Mar;14 (1) :58-61. PMID11993836
Kraus JF, Peek-Asa C, Cryer HG. "Incidence, severity, and patterns of intrathoracic and intra-abdominal injuries in motorcycle crashes." J Trauma. 2002 Mar;52 (3) :548-53. PMID11901334