Conformity of spin fluctuations in alkali-metal iron selenide superconductors inferred from the observation of a magnetic resonant mode in KxFe2−ySe2G. Friemel, W. P. Liu, E. A. Goremychkin, Y. Liu, J. T. Park, O. Sobolev, C. T. Lin, B. Keimer and D. S. InosovEPL, 99 6 (2012) 67004DOI: https://doi.org/10.1209/0295-5075/99/67004