Nelayah, J., Gu, L., Sigle, W., Koch, C. T., Pastoriza-Santos, I., Liz-Marzán, L. M., & van Aken, P. A. (2009). Direct imaging of surface plasmon resonances on single triangular silver nanoprisms at optical wavelength using low-loss EFTEM imaging. Optics Letters, 34, 1003-1005. doi:10.1364/OL.34.001003.