Dyson, F. W.; Eddington, A. S.; Davidson, C. (1920), "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 A, 220 (571–581): 291–333, Bibcode:1920RSPTA.220..291D, doi:10.1098/rsta.1920.0009
Dyson, F. W.; Eddington, A. S.; Davidson, C. (1920), "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 A, 220 (571–581): 291–333, Bibcode:1920RSPTA.220..291D, doi:10.1098/rsta.1920.0009