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Schmutz C, Bürgler A, Ashta N, Soenksen J, Bou Karim Y, Shen C, Smith RB, Jenkins RH, Mireku MO, Mutz J, Maes MJA, Hirst R, Chang I, Fleming C, Mussa A, Kesary D, Addison D, Maslanyj M, Toledano MB, Röösli M, Eeftens M
2021 XXXIVth General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS), Rome, Italy. IEEE: 1-4; ISBN 978-1-6654-2995-5