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Baldi, P.; Blanke, M.; Castaldi, P.; Mimmo, N.; Simani, S. . (2018). Fault diagnosis for satellite sensors and actuators using nonlinear geometric approach and adaptive observers. International Journal of Robust and Nonlinear Control, (), –. doi:10.1002/rnc.4083 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research