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Zang, Ruzhen; Yao, Chunde . (2015). Numerical Study of Combustion and Emission Characteristics of a Diesel/Methanol Dual Fuel (DMDF) Engine. Energy & Fuels, 29(6), 3963–3971. doi:10.1021/acs.energyfuels.5b00644 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research