Nonlinear Correlation Spectroscopy (NLCS) Geissbuehler, Matthias ; Bonacina, Luigi ; Shcheslavskiy, Vladislav ; Bocchio, Noelia L. ; Geissbuehler, Stefan ; Leutenegger, Marcel ; Märki, Iwan ; Wolf, Jean-Pierre ; Lasser, Theo Abstract Publication: Nano Letters Pub Date: March 2012 DOI: 10.1021/nl300070n Bibcode: 2012NanoL..12.1668G