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Mpelwa, Musa; Tang, Shanfa; Jin, Lijun; Hu, Ruizhi . (2019). New sulfonate Gemini surfactants: synthesis and evaluation for enhanced oil recovery applications. Journal of Dispersion Science and Technology, (), 1–9. doi:10.1080/01932691.2019.1652189 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research