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Larkin, M.P.; Dettling, J.C.; Galligan, M.P. . (2001). SAE Technical Paper Series [SAE International Small Engine Technology Conference & Exposition - (NOV. 28, 2001)] SAE Technical Paper Series - Flextube™ Catalyst Performance In 4-Stroke Motorcycle Exhaust Systems. , 1(), –. doi:10.4271/2001-01-1823 
10.4271/2001-01-1823