1. Observation of Gravitational Waves from a Binary Black Hole Merger
2. Einstein A (1915) The Field Equations of Gravitation (Meeting Reports of the Royal Prussian Academy of Sciences, Berlin), pp 844–847.
3. Einstein A (1916) Approximative Integration of the Field Equations of Gravitation (Meeting Reports of the Royal Prussian Academy of Sciences, Berlin), pp 688–696.
4. Einstein A (1918) On Gravitational Waves (Meeting Reports of the Royal Prussian Academy of Sciences, Berlin), pp 154–167.
5. The propagation of gravitational waves;Eddington;Proc R Soc Lond A Math Phys Sci,1922