As quoted by Walter Kaufmann, "The Development of the Electron Idea" (Nov. 8, 1901) The Electrician Vol. 48 https://books.google.com/books?id=owxRAAAAYAAJ pp. 95-97. Lecture delivered before the 73rd Naturforscher Versammlung at Hamburg. From the Physikalische Zeitshrift, of October 1, 1901.
Hendrik Lorentz: Idézetek angolul
Theory of Relativity: A Concise Statement (1920)
p, 125
Theory of Relativity: A Concise Statement (1920)
Forrás: The Theory of Electrons and Its Applications to the Phenomena of Light and Radiant Heat (1916), Ch. V Optical Phenomena in Moving Bodies.
Forrás: The Theory of Electrons and Its Applications to the Phenomena of Light and Radiant Heat (1916), Ch. I General principles. Theory of free electrons, pp. 8-10