Bidwell, James K. (30 November 1993). "Archimedes and Pi-Revisited". School Science and Mathematics. 94 (3): 127–129. doi:10.1111/j.1949-8594.1994.tb15638.x.
Huggett, Nick (2024), "Zeno's Paradoxes", in Zalta, Edward N.; Nodelman, Uri (eds.), The Stanford Encyclopedia of Philosophy (Spring 2024 ed.), Metaphysics Research Lab, Stanford University, retrieved 2024-03-25
Huggett, Nick (2024), "Zeno's Paradoxes", in Zalta, Edward N.; Nodelman, Uri (eds.), The Stanford Encyclopedia of Philosophy (Spring 2024 ed.), Metaphysics Research Lab, Stanford University, retrieved 2024-03-25
Atkinson, Kendall E. (1989). An Introduction to Numerical Analysis (2nd ed.). New York: Wiley. p. 20. ISBN978-0-471-62489-9. OCLC803318878.
Stoer, Josef; Bulirsch, Roland (2002). Introduction to Numerical Analysis (3rd ed.). Princeton, N.J.: Recording for the Blind & Dyslexic. OCLC50556273.