Courbin, F., & Sluse, D. (2010). First case of strong gravitational lensing by a QSO: SDSS J0013+1523 at z = 0.120. Astronomy and astrophysics, 516, . https://doi.org/10.1051/0004-6361/201014376
Chicago Style (17th ed.) CitationCourbin, Frédéric, and Dominique Sluse. "First Case of Strong Gravitational Lensing by a QSO: SDSS J0013+1523 at Z = 0.120." Astronomy and Astrophysics 516 (2010). https://doi.org/10.1051/0004-6361/201014376.
MLA (9th ed.) CitationCourbin, Frédéric, and Dominique Sluse. "First Case of Strong Gravitational Lensing by a QSO: SDSS J0013+1523 at Z = 0.120." Astronomy and Astrophysics, vol. 516, 2010, https://doi.org/10.1051/0004-6361/201014376.
Warning: These citations may not always be 100% accurate.