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Orefice, Martina; Di Vito, Vittorio . (). [American Institute of Aeronautics and Astronautics 17th AIAA Aviation Technology, Integration, and Operations Conference - Denver, Colorado ()] 17th AIAA Aviation Technology, Integration, and Operations Conference - An innovative algorithm for 2D Collision Avoidance manoeuvers elaboration based on spiral trajectories. , (), –. doi:10.2514/6.2017-4270 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research