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A 19-species reduced mechanism for methane-air based on GRI-Mech 3.0 (Latest version).Citation: T.F. Lu and C.K. Law, "A criterion based on computational singular perturbation for the identification of quasi steady state species: A reduced mechanism for methane oxidation with NO chemistry," Combustion and Flame, Vol.154 No.4 pp.761-774, 2008.