Dyson, F. W.; Eddington, A. S.; Davidson, C. (1920). „IX. A determination of the deflection of light by the sun's gravitational field, from observations made at the total eclipse of May 29, 1919”. Philosophical Transactions of the Royal Society of London. Series A, Containing Papers of a Mathematical or Physical Character. 220 (571–581): 291—333. Bibcode:1920RSPTA.220..291D. doi:10.1098/rsta.1920.0009.
Dyson, F. W.; Eddington, A. S.; Davidson, C. (1920). „IX. A determination of the deflection of light by the sun's gravitational field, from observations made at the total eclipse of May 29, 1919”. Philosophical Transactions of the Royal Society of London. Series A, Containing Papers of a Mathematical or Physical Character. 220 (571–581): 291—333. Bibcode:1920RSPTA.220..291D. doi:10.1098/rsta.1920.0009.