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da Silva, Lucas F. M.; Öchsner, Andreas; Adams, Robert D. . (2018). Handbook of Adhesion Technology || General Introduction to Surface Treatments. , 10.1007/978-3-319-55411-2(Chapter 7), 131–161. doi:10.1007/978-3-319-55411-2_7 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research