@article {1340263,
	title = {Dynamic Self-Assembly of Magnetized, Millimeter-Sized Objects Rotating at the Liquid-Air Interface},
	journal = {Nature},
	volume = {405},
	year = {2000},
	note = {714},
	pages = {1033-1036},
	author = {Grzybowski, B. A. and H.A. Stone and Whitesides, G. M.}
}
