1. Brahe T (1602) Astronomiæ instauratæ mechanica
2. Chandrasekhar S (2003) Newton’s Principia for the common reader. Clarendon Press
3. Crease RP (2010) The great equations: breakthroughs in science from Pythagoras to Heisenberg. W. W. Norton & Company
4. Darwin C (1897) Journal of researches into the natural history and geology of the countries visited during the voyage of HMS Beagle round the world, under the command of Capt. Fitz Roy, R.N. John Murray
5. Katz CJ (2009) A history of mathematics—an introduction, 3rd edn. Pearson