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Prabhakaran, P.; Saravanan, C.G.; Vallinayagam, R.; Vikneswaran, M.; Muthukumaran, N.; Ashok, K. . (2020). Investigation of swirl induced piston on the engine characteristics of a biodiesel fueled diesel engine. Fuel, 279(), 118503–. doi:10.1016/j.fuel.2020.118503 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research