Sub‐microsecond‐resolved multi‐speckle X‐ray photon correlation spectroscopy with a pixel array detector. - Zhang, Qingteng; Dufresne, Eric M.; Narayanan, Suresh; Maj, Piotr; Koziol, Anna; Szczygiel, Robert; Grybos, Pawel; Sutton, Mark; Sandy, Alec R. (Journal of Synchrotron Radiation, 2018)