@misc{Dyson_Frank_Observations_1925,
 author={Dyson, Frank},
 address={London},
 howpublished={online},
 year={1925},
 publisher={His Majesty's Stationery Office},
 language={eng},
 title={Observations of stellar parallax from photographs taken and measured at the Royal Observatory, Greenwich in the years 1913-1924 (I)},
 keywords={stellar parallaxes, stellar photometry},
}