@article {ereversal,
	title = {Analysis of and workarounds for element reversal for a finite element-based algorithm for warping triangular and tetrahedral meshes},
	journal = {BIT Numerical Mathematics},
	volume = {50},
	number = {4},
	year = {2010},
	pages = {863-884},
	author = {S. Shontz and S. Vavasis}
}