F. Kretzschmar, T. Böhm, U. Karahasanović, B. Muschler, A. Baum, D. Jost, J. Schmalian, S. Caprara, M. Grilli, C. Di Castro, J. G. Analytis, J.-H. Chu, I. R. Fisher, R. Hackl: Critical spin fluctuations and the origin of nematic order in Ba(Fe1â^'xCox)2As2. Nature Publishing Group SN  - 2016Nature Physics: 12. http://dx.doi.org/10.1038/nphys3634