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Ding, Zhaoyang; Cao, Xuejun . (2013). Affinity precipitation of human serum albumin using a thermo-response polymer with an L-thyroxin ligand. BMC Biotechnology, 13(1), 109–. doi:10.1186/1472-6750-13-109 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research