Bonn, M., Funk, S., Hess, C., Denzler, D. N., Stampfl, C., Scheffler, M., et al. (1999). Phonon- versus electron-mediated desorption and oxidation of CO on Ru(0001). Science, 285(5430), 1042-1045. doi:10.1126/science.285.5430.1042.