Laczkovich, Miklós. Real analysis : foundations and functions of one variable (First English ed.). New York. ISBN978-1-4939-4222-0.
Stewart, Ian. The foundations of mathematics (Second ed.). Oxford. ISBN9780198706434.
Grabiner, Judith V. (1983-03). "Who Gave You the Epsilon? Cauchy and the Origins of Rigorous Calculus". The American Mathematical Monthly. 90 (3): 185. doi:10.2307/2975545. Check date values in: |date= (help)
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