Tham khảo Hệ_thống_Tycho

  1. ↑ Westman, Robert S. (1975). The Copernican achievement. University of California Press. tr. 322. ISBN 978-0-520-02877-7. OCLC 164221945.
  2. ↑ Owen Gingerich, The Book Nobody Read: Chasing the Revolutions of Nicolaus Copernicus, Penguin, ISBN 0-14-303476-6
  3. ↑ Ramasubramanian, K. (1994). “Modification of the earlier Indian planetary theory by the Kerala astronomers (c. 1500 AD) and the implied heliocentric picture of planetary motion” (PDF). Current Science. 66: 784–90. Bản gốc (PDF) lưu trữ ngày 23 tháng 12 năm 2010. Truy cập ngày 11 tháng 12 năm 2018.
  4. ↑ Joseph, George G. (2000), The Crest of the Peacock: Non-European Roots of Mathematics, p. 408, Princeton University Press, ISBN 978-0-691-00659-8
  5. ↑ "The Tychonic system is, in fact, precisely equivalent mathematically to Copernicus' system." (p. 202) and "[T]he Tychonic system is transformed to the Copernican system simply by holding the sun fixed instead of the earth. The relative motions of the planets are the same in both systems..." (p. 204), Kuhn, Thomas S., The Copernican Revolution (Harvard University Press, 1957).