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Published online by Cambridge University Press: 12 January 2023
1 Lynn Thorndike, The Sphere of Sacrobosco and Its Commentators, Chicago, The University of Chicago Press, 1949.
2 Robert S. Westman, The Copernican Question: Prognostication, Skepticism, and Celestial Order, Berkeley, University of California Press, 2011, p. 489-492.
3 The Sphere: Knowledge System Evolution and the Shared Scientific Identity of Europe, https://sphaera.mpiwg-berlin.mpg.de.