Dynamics of Imidazolium Ionic Liquids from a Combined Dielectric Relaxation and Optical Kerr Effect Study: Evidence for Mesoscopic Aggregation - Turton, David A; Hunger, Johannes; Stoppa, Alexander; Hefter, Glenn; Thoman, Andreas; Walther, Markus; Buchner, Richard; Wynne, Klaas (Journal of the American Chemical Society, 2009)