Buckley, H. (1921). „The whitened cube as a precision integrating photometer”. Journal of the Institution of Electrical Engineers59 (297), 143–152. o, Kiadó: Institution of Engineering and Technology (IET). DOI:10.1049/jiee-1.1921.0007. ISSN2054-0612.
worldcat.org
Buckley, H. (1921). „The whitened cube as a precision integrating photometer”. Journal of the Institution of Electrical Engineers59 (297), 143–152. o, Kiadó: Institution of Engineering and Technology (IET). DOI:10.1049/jiee-1.1921.0007. ISSN2054-0612.