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Barucci, Emilio; Magno, Davide; Mancino, Maria Elvira . (2012). Fourier volatility forecasting with high-frequency data and microstructure noise. Quantitative Finance, 12(2), 281–293. doi:10.1080/14697680903413589 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research