@article {12,
	title = {Microscopic model of heteroepitaxy of GaAs on Si(100)},
	journal = {Phys. Rev. Lett.},
	volume = {62},
	year = {1989},
	pages = {2484},
	author = {E. Kaxiras and O.L. Alerhand J.D.Joannopoulos and G.W. Turner}
}
