@article {88191,
	title = {Spontaneous Pattern Formation on Ion Bombarded Si(001)},
	journal = {Phys. Rev. Lett.},
	volume = {82},
	year = {1999},
	pages = {2330-2333},
	author = {J.D. Erlebacher and M. J. Aziz and E. Chason and M.B. Sinclair and J.A. Floro}
}
