@article {2458,
	title = {New structural model for Na6Si3 surface magic cluster on the Si(111)-7x7 surface},
	journal = {Surface Science},
	volume = {616},
	year = {2013},
	pages = {137-142},
	author = {Chou, J. P. and Hsing, C. R. and J.C. Chen and J.Y. Lee and Wei, C. M.}
}
