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Somasundaram, S.; Mohanraj, T.; Pasupathy Raju, S. . (2014). Effect of Methanol Additive with LPG in Three Cylinder Four Stroke S.I. Engine. Applied Mechanics and Materials, 592-594(), 1503–1509. doi:10.4028/www.scientific.net/amm.592-594.1503 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research