1. W. Brouncker. “Animadversions upon the Musick-Compendium of Descartes” (London, 1653).
2. J. J. O’Connor and E. F. Robertson. “William Brouncker”, (The MacTutor History of Mathematics Online Archive, 2002). http://www.history.mcs.st-and.ac.uk
3. M. Jesseph Douglas. “Squaring the Circle: The War between Hobbes and Wallis” (University of Chicago, Chicago, 2000).
4. E. G. Dunne and M. McConnell. Pianos and continued fractions, Mathematics Magazine 72:2 (1999), pp. 104–115.
5. J. Dutka. “Wallis’s product, Brouncker’s continued fraction, and Leibniz’s series”, Archive for History of Exact Sciences 26:2 (1982), pp. 115–126.