Authors: Md.A. Hossain, J. D. F. Mottershead, D. Fournier, Aaron Bostwick, J. L. McChesney, Eli Rotenberg, R. Liang, W. N. Hardy, G. A. Sawatzky, Ilya Elfimov, D. A. Bonn, A. Damascelli - Nature Physics 2008 cited by 211