* [http://www-history.mcs.st-andrews.ac.uk/Biographies/CauchyBunyakovsky.html O'Connor, John J.; Robertson, Edmund F., "Augustin-LouisViktor CauchyBunyakovsky", MacTutor History of Mathematics archive, University of St Andrews., 2015.]
* [https://web.archive.org/web/20050617084840/http://planetmath.org:80/encyclopedia/CauchyCriterionForConvergence.html Cauchy criterion for convergence]
* [https://archive.org/details/oeuvresdaugusti01caucrich Œuvres complètes d'Augustin Cauchy Académie des sciences (France). Ministère de l'éducation nationale.]