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Bartlomiej Salski;Piotr Czekala;Tomasz Karpisz;Pawel Kopyt;. (2022). Mode Coupling in a Fabry-Perot Open Resonator . IEEE Transactions on Microwave Theory and Techniques, (), –. doi:10.1109/tmtt.2021.3081725 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research