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3. Moran DP, Taylor AB. An evaporative and engine-cycle model for fuel octane sensitivity prediction, SAE 952524.
4. SAE J1297, Surface vehicle information report, alternative automotive fuels, SAE Standard J1297; revised 2002.
5. Brumberg L, Cohn DR. Effective octane and efficiency advantages of direct injection alcohol engines, MIT Laboratory for energy and environment report, LFEE 2008-01 RP; 2008.