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“Astrolabe 45’ Zenith Distance Observations: Preliminar Results in Time and Latitude”, RMxAA, vol. 12, no. 1, p. 445, Jan. 1986, Accessed: Dec. 11, 2025. [Online]. Available: https://astronomia.unam.mx/journals/rmxaa/article/view/1986rmxaa..12..445c