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Rostamian, Hossein; Lotfollahi, Mohammad Nader . (2020). Statistical modeling of aspirin solubility in organic solvents by Response Surface Methodology and Artificial Neural Networks. Physica A: Statistical Mechanics and its Applications, 540(), 123253–. doi:10.1016/j.physa.2019.123253 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research