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Giremus, A.; Tourneret, J.-Y.; Doucet, A.. (2010). A Fixed-Lag Particle Filter for the Joint Detection/Compensation of Interference Effects in GPS Navigation. , 58(12), 6066–6079. doi:10.1109/tsp.2010.2058106 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research