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: Mathematical, Physical and Engineering Sciences220 (571–581): 291. 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: Mathematical, Physical and Engineering Sciences220 (571–581): 291. Bibcode:1920RSPTA.220..291D. doi:10.1098/rsta.1920.0009.