@article {87976,
	title = {Ion-Beam Sculpting at Nanometre Length Scales},
	journal = {Nature},
	volume = {412},
	year = {2001},
	pages = {166-177},
	author = {Li, J. and D. Stein and C. McMullan and D. Branton and M. J. Aziz and J.A. Golovchenko}
}
