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APA Citation
Cash, M. D., Witters Hicks, S., Biesecker, D. A., Reinard, A. A., de Koning, C. A., & Weimer, D. R. (n.d.). validation of an operational product to determine L1 to Earth propagation time delays. Space weather, 14(2), 93–112. http://access.bl.uk/ark:/81055/vdc_100031197883.0x000004