The hypersoft state of Cygnus X–3 - A key to jet quenching in X-ray binaries?K. I. I. Koljonen, T. Maccarone, M. L. McCollough, M. Gurwell, S. A. Trushkin, G. G. Pooley, G. Piano and M. TavaniA&A, 612 (2018) A27DOI: https://doi.org/10.1051/0004-6361/201732284