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Zeyad A. H. Qasem;Hussein A. Leftah;Haixin Sun;Jie Qi;Hamada Esmaiel;. (2021). X-Transform Time-Domain Synchronous IM-OFDM-SS for Underwater Acoustic Communication . IEEE Systems Journal, (), –. doi:10.1109/jsyst.2021.3052470 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research