Chapter Neumann, Olaf; (1981)
Über die Anstösse zu Kummers Schöpfung der “idealen complexen Zahlen” (/isis/citation/CBB000009648/)

Article Edwards, Harold M.; (1975)
The background of Kummer's proof of Fermat's last theorem for regular primes (/isis/citation/CBB000014844/)

Article Soublin, Jean-Pierre; (1984)
Préhistoire des idéaux (/isis/citation/CBB000051964/)

Article Dobrzycki, Stanislaw; (1977)
O interpretacji geometrycznej logarytmów liczb zespolonych w rozprawie Karstena z 1768 g. (The geometric interpretation of the logarithmes of complex numbers in a work by W.J.G. Karsten in 1768.) (/isis/citation/CBB000019409/)

Article Pedersen, Kirsti Møller; (1979)
Caspar Wessel and the representation of complex numbers (/isis/citation/CBB000007450/)

Book Nahin, Paul J.; (1998)
An imaginary tale: The story of [the square root of minus one] (/isis/citation/CBB000076438/)

Chapter Jacqueline Boniface; (2016)
Kummer's Generalization of Arithmetical Properties as Applied to Certain Complex Numbers (/isis/citation/CBB798391827/)

Book Reichardt, Hans; (1988)
Nachrufe auf Berliner Mathematiker des 19. Jahrhunderts: C.G.J. Jacobi, P.G.L. Dirichlet, E.E. Kummer, L. Kronecker, K. Weierstrass. Mit Fotos, Dokumenten und Archivalien (/isis/citation/CBB000033879/)

Article Bölling, Reinhard; (2005)
Ein aufgefundener früher Brief Kummers am Beginn seiner Korrespondenz mit Jacobi (/isis/citation/CBB000671393/)

Book Lützen, Jesper; (2001)
Around Caspar Wessel and The Geometric Representation of Complex Numbers (/isis/citation/CBB000550714/)

Article O'Neill, John; (1986)
Formalism, Hamilton and complex numbers (/isis/citation/CBB000041051/)

Chapter Caparrini, Sandro; (2006)
On the Common Origin of Some of the Works on the Geometrical Interpretation of Complex Numbers (/isis/citation/CBB000774506/)

Article Dauben, Joseph W.; (1971 (pub. 1974))
Georg Cantor's philosophy of mathematics: The irrational and transfinite numbers (/isis/citation/CBB000011596/)

Article Eric Vandendriessche; (2022)
The concrete numbers of “primitive” societies: A historiographical approach (/isis/citation/CBB201980517/)

Article Amanda Paxton; (2021)
The Hard Math of Beauty: Gerard Manley Hopkins and "Spectral Numbers" (/isis/citation/CBB150662150/)

Book Paolo D'Isanto; (2020)
La funzione zeta di Riemann in fisica (/isis/citation/CBB753434330/)

Chapter Edwards, Harold M.; (1987)
Dedekind's invention of ideals (/isis/citation/CBB000042678/)

Book Richard Dedekind; Heinrich Weber; (2019)
Theorie Des Fonctions Algebriques d'Une Variable (/isis/citation/CBB160173996/)

Article Albis-González, Victor S.; Soriano-Lleras, Luis I.; (1976)
The work of Indalecio Liévano on the foundations of real numbers (/isis/citation/CBB000022391/)

Article Nový, Luboš; (1981)
On Kulik's tables of divisors (/isis/citation/CBB000022315/)