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Eleonore Pierrat;Lea Rupcic;Michael Z. Hauschild;Alexis Laurent;. (2021). Global environmental mapping of the aeronautics manufacturing sector . Journal of Cleaner Production, (), –. doi:10.1016/j.jclepro.2021.126603 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research