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Pragati Rai;Markus Furger;Jay G. Slowik;Haobin Zhong;Yandong Tong;Liwei Wang;Jing Duan;Yifang Gu;Lu Qi;Ru-Jin Huang;Junji Cao;Urs Baltensperger;André S.H. Prévôt;. (2021). Characteristics and sources of hourly elements in PM10 and PM2.5 during wintertime in Beijing . Environmental Pollution, (), –. doi:10.1016/j.envpol.2021.116865 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research