@article {MillerTengThurVava2,
	title = {Geometric Separators for Finite-Element Meshes},
	journal = {SIAM J. Sci. Comput.},
	volume = {19},
	year = {1998},
	pages = {364-386},
	author = {G. L. Miller and S.-H. Teng and W. Thurston and S. Vavasis}
}