wbldb
Pellman, Elliot J.1,2; Viano, David C.1,3; Withnall, Chris4; Shewchenko, Nick4; Bir, Cynthia A.5; Halstead, P. David6,7
Concussion in professional football:​ helmet testing to assess impact performance—Part 11
Neurosurgery. January 2006;​58(1):​78-95