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Kumar, P.; John Rajan, A.; Balan, K.N. . (2014). VED & ABC Analysis of Inventories for a Wind Turbine Company. Applied Mechanics and Materials, 591(), 27–32. doi:10.4028/www.scientific.net/amm.591.27 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research