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Rafieian, Shirin; Mirzadeh, Hamid; Mahdavi, Hamid; Masoumi, Mir Esmaeil . (2018). A review on nanocomposite hydrogels and their biomedical applications. Science and Engineering of Composite Materials, 0(0), –. doi:10.1515/secm-2017-0161 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research