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Boselli, Giorgio; Trucco, Gabriella; Liberali, Valentino . (2010). Properties of Digital Switching Currents in Fully CMOS Combinational Logic. IEEE Transactions on Very Large Scale Integration (VLSI) Systems, 18(12), 1625–1638. doi:10.1109/TVLSI.2009.2025883 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research