Hermann Emerich, Swiss-Norwegian Beam Lines, European Synchrotron Radiation Facility, 38043 Grenoble, France, France
Gavin Vaughan, European Synchrotron Radiation Facility ESRF, Grenoble, France
Simon J.L. Billinge, Columbia University, Condenses Matter Physics and Materials Science Dept., Brookhaven National Laboratory, New York, United States