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Saad Saoud, L.; Rahmoune, F.; Tourtchine, V.; Baddari, K. . (2017). Fully Complex Valued Wavelet Network for Forecasting the Global Solar Irradiation. Neural Processing Letters, 45(2), 475–505. doi:10.1007/s11063-016-9537-7 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research