@article {32,
	title = {Adsorption of As on stepped Si(100): resolution of the sublattice-orientation dilemma},
	journal = {Phys. Rev. B},
	volume = {44},
	year = {1991},
	pages = {6534},
	author = {O.L. Alerhand J. Wang and J.D. Joannopoulos and E. Kaxiras and R.S. Becker}
}
