Lyman، Theodore (1906)، "The Spectrum of Hydrogen in the Region of Extremely Short Wave-Length"، Memoirs of the American Academy of Arts and Sciences، New Series، ج. 13، ص. 125–146، ISSN:0096-6134، JSTOR:25058084
Lyman، Theodore (1906)، "The Spectrum of Hydrogen in the Region of Extremely Short Wave-Length"، Memoirs of the American Academy of Arts and Sciences، New Series، ج. 13، ص. 125–146، ISSN:0096-6134، JSTOR:25058084