Testing the Kerr metric using X-ray reflection spectroscopy: spectral analysis of GX 339–4. Issue 5 (13th May 2020) - Wang, Jingyi; Abdikamalov, Askar B.; Ayzenberg, Dimitry; Bambi, Cosimo; Dauser, Thomas; García, Javier A.; Nampalliwar, Sourabh; Steiner, James F.