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Yang Xu;Linjun Qin;Guorui Liu;Minghui Zheng;Da Li;Lili Yang;. (2021). Assessment of personal exposure to environmentally persistent free radicals in airborne particulate matter . Journal of Hazardous Materials, (), –. doi:10.1016/j.jhazmat.2020.125014 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research