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Dinesha, P.; Nayak, Vighnesha; Kumar, Dheeraj; Mohanan, P. . (2014). Experimental Analysis of Cardanol Biofuel as an Alternative Fuel for Diesel Engines with Air-Side Oxygen Enrichment. Applied Mechanics and Materials, 592-594(), 1549–1553. doi:10.4028/www.scientific.net/amm.592-594.1549 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research