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Ma, Xiaoling; Mi, Yang; Zhang, Fujun; An, Qiaoshi; Zhang, Miao; Hu, Zhenghao; Liu, Xinfeng; Zhang, Jian; Tang, Weihua . (2018). Efficient Ternary Polymer Solar Cells with Two Well-Compatible Donors and One Ultranarrow Bandgap Nonfullerene Acceptor. Advanced Energy Materials, (), 1702854–. doi:10.1002/aenm.201702854 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research