ジョージ・ジョンストン・ストーニー
1098/rsnr.1975.0018. JSTOR 531468.
Stoney, G. J. (1894). “Of the "Electron", or Atom of Electricity”. Philosophical Magazine 38: 418–420. https://www.biodiversitylibrary.org/item/122066#page/432/mode/2up.
Barrow, J. D. (1983). “Natural Units Before Planck”. Quarterly Journal of the Royal Astronomical Society 24: 24. Bibcode: 1983QJRAS..24...24B.
"The Constants of Nature, by John D. Barrow, Jonathan Cape, London 2002.