@article {k26,
	title = {Effects of isolated impurities on atom scattering from crystalline surfaces: exact quantum-mechanical calculations},
	journal = {Chemical physics letters},
	volume = {105},
	year = {1984},
	pages = {523{\textendash}526},
	publisher = {Elsevier},
	author = {Gerber, R. B. and Yinnon, A. T. and Kosloff, R.}
}
