Michelson, A. A.; Gale, Henry G. (1925). “The Effect of the Earth's Rotation on the Velocity of Light, II.”. Astrophysical Journal61: 140. Bibcode: 1925ApJ....61..140M. doi:10.1086/142879.
Anderson, R., Bilger, H.R., Stedman, G.E.; Bilger; Stedman (1994). “Sagnac effect: A century of Earth-rotated interferometers”. Am. J. Phys.62 (11): 975–985. Bibcode: 1994AmJPh..62..975A. doi:10.1119/1.17656.
Michelson, A. A.; Gale, Henry G. (1925). “The Effect of the Earth's Rotation on the Velocity of Light, II.”. Astrophysical Journal61: 140. Bibcode: 1925ApJ....61..140M. doi:10.1086/142879.
Anderson, R., Bilger, H.R., Stedman, G.E.; Bilger; Stedman (1994). “Sagnac effect: A century of Earth-rotated interferometers”. Am. J. Phys.62 (11): 975–985. Bibcode: 1994AmJPh..62..975A. doi:10.1119/1.17656.