Goldstein, Bernard R. (1998), "What's new in Kepler's new astronomy?", in Earman, John; Norton, John D. (eds.), The Cosmos of Science: Essays of Exploration, Pittsburgh-Konstanz series in the philosophy and history of science, University of Pittsburgh Press, pp. 3–23, ISBN9780822972013. See in particular p. 21: "an unpublished manuscript by Viète includes a mathematical discussion of an ellipse in a planetary model".
Kinser, Sam. The works of Jacques-Auguste de Thou. Google Books
Bockstaele, Paul (2009). "Between Viète and Descartes: Adriaan van Roomen and the Mathesis Universalis". Archive for History of Exact Sciences. 63 (4): 433–470. doi:10.1007/s00407-009-0043-4. JSTOR41134318.
Bockstaele, Paul (2009). "Between Viète and Descartes: Adriaan van Roomen and the Mathesis Universalis". Archive for History of Exact Sciences. 63 (4): 433–470. doi:10.1007/s00407-009-0043-4. JSTOR41134318.
pagesperso-orange.fr
Letter from Descartes to Mersenne. (PDF) Pagesperso-orange.fr, February 20, 1639 (in French)