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Patole, Sujeet Milind; Torlak, Murat; Wang, Dan; Ali, Murtaza . (2017). Automotive radars: A review of signal processing techniques. IEEE Signal Processing Magazine, 34(2), 22–35. doi:10.1109/MSP.2016.2628914 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research