Huth, F., Govyadinov, A., Amarie, S., Nuansing, W., Keilmann, F., & Hilenbrand, R. (2012). Nano-FTIR Absorption Spectroscopy of Molecular Fingerprints at 20 nm Spatial Resolution. NANO LETTERS, 12(8), 3973-3978. doi:10.1021/nl301159v.