Simple and aberration-free 4color-STED - multiplexing by transient binding Beater, Susanne ; Holzmeister, Phil ; Lalkens, Birka ; Tinnefeld, Philip Abstract Publication: Optics Express Pub Date: April 2015 DOI: 10.1364/OE.23.008630 Bibcode: 2015OExpr..23.8630B