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Spoerk, Martin; Savandaiah, Chethan; Arbeiter, Florian; Traxler, Gerhard; Cardon, Ludwig; Holzer, Clemens; Sapkota, Janak . (2018). Anisotropic properties of oriented short carbon fibre filled polypropylene parts fabricated by extrusion-based additive manufacturing. Composites Part A: Applied Science and Manufacturing, (), S1359835X1830246X–. doi:10.1016/j.compositesa.2018.06.018 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research