Article Kragh, Helge; (2003)
Magic Number: A Partial History of the Fine-Structure Constant (/isis/citation/CBB000340518/)

Article Eckert, Michael; (1997)
“Planck vorsichtig und abstrakt, ich etwas draufgängerisch”: Planck und Sommerfeld, oder Wie “wissenschaftliche Revolutionäre” denken (/isis/citation/CBB000078835/)

Article Jentschura, U. D.; Nándori, I.; (2014)
Attempts at a Determination of the Fine-Structure Constant from First Principles: A Brief Historical Overview (/isis/citation/CBB001421684/)

Article Nisio, Sigeko; (1974 (pub. 1975))
Sommerfeld's quantum theory of 1911 (/isis/citation/CBB000025047/)

Article Bierhalter, Günter; (1994)
Ist die Sommerfeldsche Feinstruktur-“Konstante” eine statistische Relation? (/isis/citation/CBB000040258/)

Article Massimiliano Badino; (2019)
Schooling the Quantum Generations: Textbooks and Quantum Cultures from the 1910s to the 1930s (/isis/citation/CBB096225815/)

Article Seth, Suman; (2009)
Zweideutigkeit about “Zweideutigkeit”: Sommerfeld, Pauli, and the Methodological Origins of Quantum Mechanics (/isis/citation/CBB000933680/)

Article Seth, Suman; (2004)
Quantum Theory and the Electromagnetic World-view (/isis/citation/CBB000551029/)

Chapter Eckert, Michael; (2013)
Sommerfeld's Atombau und Spektrallinien (/isis/citation/CBB001552340/)

Article Ozawa, Takeshi; (2009)
On the Initial Reception of Quantum Mechanics in Japan, 1925--1928 (/isis/citation/CBB000953473/)

Book Michael Eckert; (2020)
Establishing Quantum Physics in Munich: Emergence of Arnold Sommerfeld’s Quantum School (/isis/citation/CBB166235354/)

Book Michael Eckert; (2013)
Arnold Sommerfeld: Science, Life and Turbulent Times 1868-1951 (/isis/citation/CBB490294723/)

Article Colm O'Sullivan; (2016)
Some Reflections on the Role of Semi-Classical Atomic Models in the Teaching and Learning of Introductory Quantum Mechanics (/isis/citation/CBB634033973/)

Article Seth, Suman; (2008)
Crafting the Quantum: Arnold Sommerfeld and the Older Quantum Theory (/isis/citation/CBB000931142/)

Article Seth, Suman; (2008)
Mystik and Technik: Arnold Sommerfeld and Early-Weimar Quantum Theory (/isis/citation/CBB000930036/)

Article Katzir, Shaul; (2005)
On “The Electromagnetic World-view”: A Comment on an Article by Suman Seth (/isis/citation/CBB000670001/)

Book Anthony Duncan; Michel Janssen; (2019)
Constructing Quantum Mechanics: Volume 1: The Scaffold: 1900-1923 (/isis/citation/CBB260967807/)

Book Seth, Suman; (2010)
Crafting the Quantum: Arnold Sommerfeld and the Practice of Theory, 1890--1926 (/isis/citation/CBB001031312/)

Chapter Meyenn, Karl von; (1993)
Sommerfeld als Begründer einer Schule der Theoretischen Physik (/isis/citation/CBB000049196/)

Article Eckert, Michael; (1990)
Sommerfeld und die Anfänge der Festkörperphysik (/isis/citation/CBB000057351/)