GRAVITY Collaboration;Abuter, R.;Amorim, A.;Anugu, N.;Bauböck, M.;Benisty, M.;Berger, J. P.;Blind, N.;Bonnet, H.«Detection of the gravitational redshift in the orbit of the star S2 near the Galactic centre massive black hole».Astronomy & Astrophysics,vol. 615,15,24-07-2018,p.L15. arXiv: 1807.09409. Bibcode: 2018A&A...615L..15G. DOI: 10.1051/0004-6361/201833718.
GRAVITY Collaboration;Abuter, R.;Amorim, A.;Anugu, N.;Bauböck, M.;Benisty, M.;Berger, J. P.;Blind, N.;Bonnet, H.«Detection of the gravitational redshift in the orbit of the star S2 near the Galactic centre massive black hole».Astronomy & Astrophysics,vol. 615,15,24-07-2018,p.L15. arXiv: 1807.09409. Bibcode: 2018A&A...615L..15G. DOI: 10.1051/0004-6361/201833718.
GRAVITY Collaboration;Abuter, R.;Amorim, A.;Anugu, N.;Bauböck, M.;Benisty, M.;Berger, J. P.;Blind, N.;Bonnet, H.«Detection of the gravitational redshift in the orbit of the star S2 near the Galactic centre massive black hole».Astronomy & Astrophysics,vol. 615,15,24-07-2018,p.L15. arXiv: 1807.09409. Bibcode: 2018A&A...615L..15G. DOI: 10.1051/0004-6361/201833718.