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Domingues, Rui Carlos Castro; Pereira, Cristina Cardoso; Borges, Cristiano Piacsek . (2017). Morphological control and properties of poly(lactic acid) hollow fibers for biomedical applications. Journal of Applied Polymer Science, (), 45494–. doi:10.1002/app.45494 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research