Chapter Bölling, Reinhard; (1997)
Kummer vor der Erfindung der “idealen complexen Zahlen”: Das Jahr 1844 (/isis/citation/CBB000078499/)

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/)

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

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

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

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 Corry, Leo; (2010)
Hunting Prime Numbers---From Human to Electronic Computers (/isis/citation/CBB000933579/)

Article Pieper, Herbert; (1988)
Urteile C.G.J. Jacobis über den Mathematiker E.E. Kummer (/isis/citation/CBB000054753/)

Book Havil, Julian; (2014)
John Napier: Life, Logarithms, and Legacy (/isis/citation/CBB001510061/)

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/)

Book Kummer, Ernst Eduard; (1975)
Collected papers. Vol. 1: Contributions to number theory. Vol. 2: Function theory, geometry, and miscellaneous. Edited by Weil, André (/isis/citation/CBB000022718/)

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

Article Roman Sznajder; (2016)
On Known and Less Known Relations of Leonhard Euler with Poland / O znanych i mniej znanych relacjach Leonharda Eulera z Polską (/isis/citation/CBB070750288/)

Book Nahin, Paul J.; (2006)
Dr. Euler's Fabulous Formula: Cures Many Mathematical Ills (/isis/citation/CBB000772751/)

Book Mazur, Barry; (2003)
Imagining Numbers (Particularly the Square Root of Minus Fifteen) (/isis/citation/CBB000641879/)

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

Article Haufe, Chris; (2012)
Darwin's Laws (/isis/citation/CBB001221610/)