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Tarnowska, Monika; Krawczyk, Tomasz . (2020). Click chemistry as a tool in biosensing systems for sensitive copper detection. Biosensors and Bioelectronics, 169(), 112614–. doi:10.1016/j.bios.2020.112614 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research