Experimental Realization of Subradiant, Superradiant, and Fano Resonances in Ring/Disk Plasmonic Nanocavities - Sonnefraud, Y; Verellen, N; Sobhani, H; Vandenbosch, GAE; Moshchalkov, VV; Van, Dorpe P; Nordlander, P; Maier, SA (ACS Nano, 2010)