“Loneliness of Catalonia”: Separatism in Catalan-speaking Regions in Spain in 21st Century by T. P. Nesterova, D. V. Ushakov

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Simulation of Navigation Receiver for Ultra-Small Satellite by A. A. Spiridonov, D. V. Ushakov, V. A. Saechnikov

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Initial Orbit Determination of a Space Object from Limited Angular Optical Measurements by V. S. Baranova, A. A. Spiridonov, D. V. Ushakov, V. A. Saetchnikov

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High-temperature terahertz quantum-cascade lasers: design optimization and experimental results by D. V. Ushakov, A. A. Afonenko, I. A. Glinskiy, R. A. Khabibullin

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Development of Engineering Models of Nanosatellites for Student Training by V. Е. Evchik, A. A. Spiridonov, D. V. Ushakov, V. S. Baranova, I. A. Shalatonin, V. A. Saechnikov

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