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Ruby, A., Shen, W.-B., Shaker, A. and Ashry, M.: Determination of Geopotential Difference Between Two Ground Stations Based On Atomic Clocks Onboard Satellites and on Ground Using Laser Time Transfer Links, In Proceedings of the19th International Symposium on Geodynamics and Earth Tides, Online, Wuhan, China, June 23–26, 2021