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Dichiara, Anthony B.; Weinstein, Steven; Rogers, Reginald E. . (2015). On the Choice of Batch or Fixed-Bed Adsorption Processes for Wastewater Treatment. Industrial & Engineering Chemistry Research, (), 150813122508006–. doi:10.1021/acs.iecr.5b02350 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research