Laugwitz (1989). Laugwitz, Detlef (1989). »Definite values of infinite sums: aspects of the foundations of infinitesimal analysis around 1820«. Arch. Hist. Exact Sci. Zv. 39, št. 3. str. 195–245. doi:10.1007/BF00329867.
Barany (2013). Barany, Michael (2013). »Stuck in the Middle: Cauchy's Intermediate Value Theorem and the History of Analytic Rigor«. Notices of the American Mathematical Society. Zv. 60, št. 10. str. 1334–1338. doi:10.1090/noti1049.